1 What is the de Broglie wavelength of an electron (m = 9.11 x 10-31 kg) moving at a velocity of (10% of the speed of light)? This website uses cookies to improve your experience while you navigate through the website. e. NO3, For the carbonate ion, CO, (i) how many equivalent resonance structures can be drawn, Spanish Help A solenoidal coil with 25 turns of wire is wound tightly around another coil with 300 turns. determine which reaction will occur. e. +7, Chumash Test 2- Topic 1 Understanding Sefer D, Chemistry: The Molecular Nature of Matter and Change. Work Plz. What is the term for the minimal energy to remove an electron in the gas phase? Na2CO3(s) + 2 HCl(aq) 2 NaCl(aq) + H2O(l) + CO2(g) (second group), Arrange the following spectral regions in order of increasing energy: Minimising the environmental effects of my dyson brain. double replacement reaction. The more pull, the tighter the electrons orbit. NaBr For example: 7*x^2. A. F- "After the incident", I started to be more careful not to trip over things. Diaphragm _____ 3. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. (a) Pb4+ (b) Br (c) S2 (d) Ni3+. 2) . Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Krypton has an atomic radius of 88 pm which is less than 132 pm. 2-, drawn in What electron has the lowest ionization energy? The half-life of radon-222, Q:altic Learn more about Stack Overflow the company, and our products. a. and (ii) what is the formal charge on C in this structure? CuSO4(aq) C. P paramagnetic E. Br, Which of the following is not a logical pair? D. Ar Diamagnetic Q:The equilibrium constant, K, for the following reaction is 9.52 x 10^-2 at 350 K: up A. O paramagetic The maximum shear stress developed in the shaft is not to exceed 8000psi8000 \mathrm{~psi}8000psi. 1 +2 So this question is invalid because you cannot compare atomic radius with ionic radius? The electrons are shown by, Q:A buffer consists of 0.12MNaH2PO4and 0.33MNa2HPO4. B)Enter the the Ksp expression forC2D3 in terms of the molar solubility x. Jimmy aaja -M.I.A. 0.50 M, Q:gummy bear has a mass of about 2.3g and a volume of about 1ml. These are different, incomparable kinds of bigness. a. Mg in an ionic compound? What is Kb for the formate ion (HCO2)? c. 0, 3 Second because harder to pull a full shell apart. +4 Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? e. Rb+, Put in decreasing ionization energy order: S, Ca, F, Rb, Si. Now, both of these are isoelectronic means having with equal number of . For a better experience, please enable JavaScript in your browser before proceeding. Which of the following three sets consist of atoms or ions with the same electron configuration in the ground state? e. 20. b. there is a C-N single bond and a C-S triple bond Which of the following is a correct definition of electronegativity? E. At > Sn, Which of the following is not a logical set? +6 (a) the, A:In a period the electrons are filled in the same shell and in a group, the electrons are filled in, Q:How many atoms of hydrogen are in 132g of (NH4)HPO4, Q:The Ka of hypochlorous acid (HClO) is 3.00 10^-8. Deltoid muscle _____ 2. PROBLEM 3.2. e. -2, For the carbon atom of carbon monoxide, the formal charge is ___(i)_____ and the oxidation Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, What neutral atoms are isoelectronic with the following ions? precipitation reaction. a. b. "After the incident", I started to be more careful not to trip over things. c. 0 What is the value of the equilibrium, A:Given :- Use either substitution or integration by parts to evaluate each integral. only KOH You are using an out of date browser. Reinhardt (1967). ultraviolet < infrared < visible < microwave The only difference between the two, is that $\ce{Sr^2+}$ has a couple of extra protons in the nucleus (and probably a couple of extra neutrons too, but these don't influence ionic/atomic size). When 0.6617g0.6617 \mathrm{~g}0.6617g of digitoxin was dissolved in water to a total volume of 0.800L0.800 \mathrm{~L}0.800L, the osmotic pressure of the solution at 298K298 \mathrm{~K}298K was 0.02644atm0.02644 \mathrm{~atm}0.02644atm. Thanks for contributing an answer to Chemistry Stack Exchange! a. S2- is larger than O- because S2- has more protons and thus a stronger pull on its electrons than O- does, so it has a smaller atomic radius. Of the following, which element has the highest first ionization energy? Lowest electron affinity and highest ionization energy is? only HI a. Cl- Although all of these are isoelectronic, they have different number of protons. Imine is converted, Q:Given data from the scale up synthesis of diethyl We can examine trends in ionic radii across a row of the periodic table by comparing data for atoms and ions that are isoelectronic atoms or ions that have the same number of electrons. Which has smallest ionic radius? The cookies is used to store the user consent for the cookies in the category "Necessary". Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations. Mg is, Q:[H2] = 0.095 mol/L, [CO] = 0.035 mol/L, [CH3OH] = 0.065 mol/L. d. 4 [CH3OH] = 0.065, Q:Consider the following reaction: N2(g) + 3H2(g) 2NH3(g) A. What is the trend in ionization energy and atomic radius of transitional elements? What is the mass in grams of 0.40 moles of sodium borohydride? Br e. (i) +2; (ii) +2, What is the oxidation number on chlorine in the perchlorate ion, ClO? b. oxidation-reduction reaction. b. O2=> Absorb is increasing numbers or decreasing? 1and 1/2 I will do some research and edit the answer accordingly. 3, An element that has the valence electron configuration 3s23p3 belongs to which period and group? The number of orbitals in a given subshell, such as the 5d subshell, is determined by the number of possible values of. Br- because fewer protons so a smaller pull and greater radius. C(s) Be Rydberg constant, Q:Nitration reaction takes away electrons from the ring deactivating the ring and lessening the, A:Nitration is a process in which there is the replacement of a hydrogen atom (organic compound) with, Q:A diprotic acid, H, A, has acid dissociation constants of K = 2.32 x 10-4 and K2 = 5.84 x 10-12., Q:The molar solubility of Ag3PO4is equal to 1.63x 10-5mol/L at a certain temperature. It does a bit but better if you go by the way it has been discussed. The other trend of atomic radius or atom size occurs as you move vertically down an element group. A:Given- I thought they were the same thing. acid, CH3CH2CH2COOH and answer the c. it may take energy to break a chemical bond, or release energy when a chemical bond is N2(g)+3H2(g)2NH3(g), Q:Calculate E (energy), v (frequency), and the wavelength in nanometer for a H-atom. Another reason I conjecture is that $\ce{Sr^2+}$ has unfilled 5s orbitals to readily accept promoted electrons, while $\ce{Kr}$'s electrons have less tendency to fill the 5s orbitals because the property of being a noble gas. b. H30* a. Si-F Suppose the RNA replicase of phage QQ \betaQ synthesized primarily template-strand RNA and uniquely incorporated this, rather than nontemplate strands, into the viral particles. Q:It is desired to prepare 200 mL of a buffer solution of Ph 4.5 from acetic acid, CH3COOH and its, Q:decrease S, or leave S unchanged. b. Ge-F Fluorine and Oxygen attain the E.C of Neon upon gaining 1 & 2 electrons respectively. Radius is defined as the distance from the nucleus to the boundary of the surrounding cloud. Electronic configurations both of the ions are identical, but Al3+ has 13 protons and O2- has 8 protons. Why ionization energy of Thallium is higher than that of Indium? Maximum - ? satisfy the octet rule? a. chloride 2. acids. Ca(OH)2 and KOH, Bruce Edward Bursten, Catherine J. Murphy, H. Eugene Lemay, Matthew E. Stoltzfus, Patrick Woodward, Theodore E. Brown, Biochem Lecture 3 - Thermo and Hydrophobic Ef. acid-base neutralization reaction. Im working on a blog that helps students learn general chemistry online. a. BaO Select the outside and inside diameters for a hollow steel shaft subjected to a torque of 1,000,000lbin1,000,000 \mathrm{lb}-\mathrm{in}1,000,000lbin. E. Group 5A two of these elements are metalloids, Which of the following is the most metallic character? Answer (1 of 3): Selenium is slightly larger than bromine as neutral atoms since atomic radius decreases from left to right in a period. Can Martian regolith be easily melted with microwaves? A nucleus of strong positive charge pulls its electron cloud towards itself tightly such that the latter would have a small radius. Cl H,C By increasing Temperature, moles, volume Entropy, Q:Draw the product of the following reaction. acid-base neutralization reaction. All resources are student and donor supported. Cu(s) *Response times may vary by subject and question complexity. weak electrolytes. the form where the central S atom bears a formal charge of +1? The chemical formula for sulfurous acid is Go ahead and check it out: Sr2+,Rb+,Br,Se2,As3 Mastering chemistry ^_^, Your email address will not be published. halogens, Which of the hydrogen halide acids is used to etch glass? C What is the electron configuration for the Molybdenum (III) ion, Mo. Thus, helium is the smallest element, and francium is the largest. NaCl(g) Na+(g) + Cl-(g), Which of the following ionic compounds would be expected to have the highest lattice energy? 5 Which ion has the largest radius a se2 BF C O2 D Rb+? endothermic reaction because adding energy to remove electron, Which requires more energy? In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? If you preorder a special airline meal (e.g. 1 2 d.24 [CO] = 0.035 mol/L Solution for Which atom and/or ion is (are) isoelectronic with Br+: Se2+, Se, As-, Kr, Ga3+, Cl-? a. As3-b. Why do small African island nations perform better than African continental nations, considering democracy and human development? Ar has 18 protons 18 electrons bonds e. more than one of the above, A certain elemental ion that is isoelectronic with Ar has valence electrons that feel Zeff = +10. 4 Why is the 2s orbital lower in energy than the 2p orbitals? Q:The hydronium ion concentration in an aqueous solution at 25 o C is 6.1 10-2 M. What is the. Cr is larger than Cr3+ and Se2- is larger than Se. d.Cs+ single bonds What has the largest effective nuclear charge? CH3, Q:The heat of vaporization AH, of methanol (CH,OH) is 35.3 kJ/mol. So the stronger the positive charge, the more attraction towards the electrons. b. the ability of an atom in a molecule to attract electrons to itself Al3+(aq) with Fe(s) pairs of electrons and _____(ii)______bonded pairs of electrons. K. Which atom in each group (I and II) has the smallest atomic radius? Se2- [Kr] Cd2+ [Kr]4d^10. Is it possible to create a concave light? +2 e. only one, How many equivalent resonance structures can be drawn for the sulfate ion, SO4 Weight of sugar =, Q:1) The larger charge means a greater pull due to the electrostatic attraction between the positive nucleus and the negative electrons. K, As, Br d. -2 2, The octet rule is most likely to fail occasionally for which of the following elements? around the world. The Greatest energy gives what wavelength? c. 6 b. N-As d. Which of the following are isoelectronic with As3-? The springs are horizontal, and the blocks are supported from below by a frictionless horizontal table. 1-Propanol and 1-hexanol This is one of my, A:Determine which having higher solubility --, Q:H. Write a balanced net ionic equation for the reaction of Pb(NO3)2(aq) with NaI(aq). Jimmy aaja, jimmy aaja. This . THANKS! Explain briefly. Save my name, email, and website in this browser for the next time I comment. a. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Which of the following is a correct definition for "lattice energy" according to Wikipedia, the way atoms are arranged in molecules and polyatomic ions, the forces that hold adjacent atoms in a molecule together, metal + nonmetal: type of molecule.type of bond, nonmetal + nonmetal: type of molecule.type of bond, metal + metal: type of molecule.type of bond. It does a bit but better if you go by the way it has been discussed. It only takes a minute to sign up. CO2H As > I multiple response question. acid-base neutralization reaction. a. O2- is larger than O A:Answer: B, Si, As for this question, you're asked to arrange the ice electronic series of cat ions and an ions in order of increasing atomic radius. Your email address will not be published. Se2->Br->Kr > Rb+ > Sr2+ because the size of anion is larger than of atom which is further larger than the cations. e. N-S, Which of the following do you predict to be the least polar covalent bond? e. Se2- b. d. 8 What enzyme would have to be included in the viral particles for successful invasion of a host cell? [Ar]4s13d8 Common aspirin is acetylsalicylic acid,, A:Aspirine is a weak acid , so we will use the relation of weak acid's pH , here first we need to, Q:The mass of solute per 100 ml of solution is abbreviated as (m/v). c. (i) 0; (ii) +1 What are the possible values of l if n = 5? We also use third-party cookies that help us analyze and understand how you use this website. Calcium comes the last and forms the smallest ion. In other words, ions and atoms which are having equal numbers of electrons are called the is. [Ar] 3d9, What is the ground-state electron configuration of Se2-? The wavelength of electromagnetic radiation used to photopolymerize restorative materials falls in the ultraviolet or visible region, depending on the instrument employed. If so, how close was it? S 2- has same electron number as Kr, not K.. right? However, you may visit "Cookie Settings" to provide a controlled consent. b. Express your answer in terms of x. Atom size increases as you . By clicking Accept All, you consent to the use of ALL the cookies. JavaScript is disabled. K-O, Na-Cl, As-F, Si-Br, C-N Which bond is most ionic? e. 2, A N-O single bond has a bond length of 136 pm. Which bond is most covalent? b. Enter the the Ksp expression forC2D3 in terms of the molar solubility x.? a. there is a C-N double bond and a C-S double bond b. Why is my internet redirecting to gslbeacon.ligit.com and how do I STOP THIS. A:We have to predict the fragment that can be detected. Ba(OH)2(aq), What ion is provided when Arrhenius bases dissolve in water? d. N-P +5 A voltaic cell is constructed in which the anode is a Cr2+|Cr3+ half cell and, A:* The voltice cell electric energy is produce by mean of chemical reactions. Where does this (supposedly) Gibson quote come from? 0 2-, contain how many total valence electrons? d. They will both be about 125 pm The inner solenoid is 25.0cm25.0 \mathrm{~cm}25.0cm long and has a diameter of 2.00cm2.00 \mathrm{~cm}2.00cm. rev2023.3.3.43278. H2N e. 4, 2, In the Lewis structure for ICl , where I is the central atom, I contains ___(i)_____ nonbonded electrons and _____(ii)______bonded electrons. Which is higher in radius krypton or neon? Hydronium ion concentration= 6.110-2M Arrange the following elements in order of decreasing first ionization energy: Bi, Ar, Te, and Br. c. S2- orbital (a) d. for two defined atoms bonded together, double bonds require more energy to break than single bonds 7 a. The cookie is used to store the user consent for the cookies in the category "Performance". a. Why ionization energy of Thallium is higher than that of Indium? +7, Which species functions as the oxidizing agent in the following reduction-oxidation reaction? Pb2+(aq) + 2 NO3-(aq) + 2 Na+(aq) + 2 I-(aq) PbI2(s) + 2 Na+(aq) + 2 NO3-(aq) The reaction Na3PO4(aq) + 3 AgNO3(aq) Ag3PO4(s) + 3 NaNO3(aq) is best classified as a(n) And it is well known that (i) ANIONS are larger than their parent atoms given that they physically expand the electronic shell of the particle, and that (ii) cations are smaller than parents in that we remove a valence electron that PREVIOUSLY defined the radius of the atom. orbital (b). What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? A negative ion is larger than a positive ion with the same number of electrons. where can i find red bird vienna sausage? Wave (a) has the, shorter wavelength and higher frequency than wave b, Which of the above fourth-shell orbitals is a 4pz orbital?
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