Q: ELEMENT X HAS AN ATOMIC NUMBER OF 9 1. How many atomic orbitabls does atom X have? 2. How many…
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Q: All of the following exhibits resonance expect a, po4^3- b, SiO4^4- c, SO4^2- d, CIO4^_
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Q: Is NO2-1 polar, non polar, or ionic?
A: Since you have posted multiple questions, we are entitled to answer the first only.
Q: Using Figure 7.7, predict which is longer, the P¬Br bond inPBr3 or the As¬Cl bond in AsCl3.
A:
Q: MCQ 75: The attempt in ionic bond formation is to A. get rid of excess electrons B. attain…
A: An ionic bond is established by transferring of one or even more valence electrons, usually from a…
Q: V. Arrange the following ions in order of increasing ionic radius: K*, CI , s2, Ca2+ Drag and drop…
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Q: What is the ground state electron configuration for the phosphide ion (P3-)? O A. [Ne] 3p3 O B. [Ne]…
A: Phosphorus is a group 15 element with atomic number 15. Electronic configuration of P is [Ne] 3s23p3…
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Q: 7. What is Polarography? Which equation is used in Polarography? Draw a typical d.m.e.
A: Polarography is a type of voltammetry in which the working electrode is either a dropping mercury…
Q: N2(g) deltaH(kj/mol)=0, deltaG(kj/mol)=0, S(J/mol K)=1891.6 H2(g) deltaH=0, deltaG=0, S=130.7…
A: Given reaction is : N2(g) + 3H2(g) ----> 2NH3(g) T = 298.15 K P(N2) = 1 atm P(H2) = 1 atm…
Q: I'm trying to determine if this compound is ionic or covalent, but I'm pretty clueless. I would be…
A: Ionic compound is formed due to strong electrostatic interactions between ions. Such interaction…
Q: (iv) Greater electron affinity: Se or Sn
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Q: 10.57 In addition to ammonia, nitrogen forms three other hydrides: hydrazine (N,H), diazene (N,H,),…
A: 1) Lewis Structure of hydrazine 2) Lewis Structure of diazene 3) Lewis structure of tetrazene 4)…
Q: Rank the following in order of increasingradius:(a) O²⁻, F⁻, Na⁺(b) S²⁻, P³⁻, Cl⁻
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Q: Choose the paramagnetic species from below. O 02- O Zn O Cd2+ O Nb3+ O Mg
A: If species contain unpaired electron, then species is paramagnetic in nature. So,
Q: Element X has an electron configuration 1s22s22p1. The formula of the choride formed with element X…
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Q: 8. Given the following information: Li(s) HI(g) → H(g) + I(g) enthalpy of sublimation of Li(s) = 166…
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Q: 1. Explain, in detail, what is wrong with the following set of quantum numbers: n=3,1=2,m=0: name…
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Q: 3 What is the biggest difference between the Lewis and the AO-model in terms of the localisation of…
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Q: 1. (a) Illustrate an electron orbital diagram of subshell combination when n = 2. (b) Give an…
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Q: Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in…
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Q: Which species have AH°¢ = 0? C (s, diamond) O Zn (s) O I2(g) O F2 (1) Hg (s)
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A: Ionization energy means energy needs to eliminate electron/s from its valence shell. Ionization…
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Q: Correct order of paramagnetic nature is O NE < NE < N2 O N2 < N; < Ng- NĘ < NG- < N2 N; < N2 < NG-
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A: i) I, F, Cl are belonged to the same group 17 in the group from top to bottom atomic size increases…
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A: Thus, compounds with an O—O bond length of ≈1.4–1.5 Å and νOO between ≈800 and 930 cm−1 are…
Q: Without consulting any tables, arrange the following sub- stances in order and explain your choice…
A: Since you have posted multiple questions, we will solve only first question for you. To get the…
Q: Which of the following is isoelectronic with p3-2 • View Available Hint(s) O N2- O 0- OK* O Na*…
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Q: 1.6 If the repulsive energy is of the form C exp(-rda), determine C and a for NaCl if the cohesive…
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Q: 12. 13. • . 17 protons |||| ● I || H ● Li .Be. B. Na Mg. AI Si : Ar .. K .Ca. • Ga Ge . As Se : Kr…
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Q: 3) urite the Hamiltanian perator for the systen consiseing of N electrons and M atoms. Explain each…
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Q: predict which is longer, the P ¬ Br bond in PBr3 or the As ¬ Cl bond in AsCl3
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Q: 12. Why does Li have a larger first ionization enengy than Na? OA Because Li has only 3 electrons…
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Q: in Example 4. Why do the transition elements exhibit higher enthalpies of atomisation? (N, R ne
A:
Q: What is the electronic configuration of each atom in CO3^2-?
A: The ion given is CO32- Hence the structure of the ion is as shown below.
Q: what is the electron figuration for Ru with the neutral atom and with 3+ ion?
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Q: What is the maximum number of electrons that can have n = 5, l = 3 and ml = -1.
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Q: How do we get X=3 for ClF3
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Q: 5. Which of the following covalent bonds is the LEAST polar? d. N- F а. С-CI b. С -Н е. О-Н f. 0-S…
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Q: ENRCHMENT ACTIVITY! You complete me! Draw the Lewis dot structures of the following ions: 1. Fe CI…
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- 1- The following chemical reaction takes place in an aqueous solution: FeBr2 (aq) + 2KOH (aq) → Fe(OH)2 (s) + 2KBr (aq) Write the net ionic equation for this reaction. 2- Draw the Lewis structure for ethane (C2H6). Be certain you include any lone pairs. 3-Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced. HBr + Ca(OH)2 → 4-A chemistry student needs 25.0 g of methyl acetate for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of methyl acetate is 0.934 g *cm-3. Calculate the volume of methyl acetate the student should pour out. Be sure your answer has the correct number of significant digits. ____________mL 5- NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a microwave signal to the Space Shuttle using radio…2RO; (aq) + 12 H* (aq) + 3 M (s) = RO (g)+3M²* (aq) + 6 H2O (1) = 3.86 V. R: 5 valence e-, electronegativity of R = 3.3 M: 2 valence e-, electronegativity of M = 0.5 O and H represent Oxygen and Hydrogen (the known elements, with their known properties) All atoms follow the octet rule; except for Hydrogen which follows the duet rule. b) Calculate the new cell potential if concentrations of all the reactants is deceased to 0.5 M, and the concentrations of all the products is increased to 0.5 M. Assume 6 mol electrons transferred in the reaction.Testosterone is an anabolic steroid. The structure of testosterone is shown below. What is the shape of the bonds at (i) ? Hint: atom (iv) has been completed for you as an example. (iv) bond angle: 109.5°, geometry of the electron pairs: tetrahedral, shape of the bonds: tetrahedral iii ·····|||I H **…||||I H ii iv
- Draw the correc (best) Lewis structure (LS) for the ionic compound K2SeO3 (on looose leaf paper--NOT TO BE SUBMITTED) and then answer the following questions.(NOTE: Use the cardinal numbers 0, 1, 2, 3, and so on for any quantity required)a) What charge does the K ion have in this compound? (give size & sign of charge: e.g., 1+, 2-, etc.) b) What charge does the SeO3 ion have in this compound? (give size & sign of charge: e.g., 1+, 2-, etc.) c) How many lines, if any, attach each K ion to the SeO3 ion? d) How many valence electrons does the SeO3 ion (alone) have? e) How many single bonds does the LS of the SeO3 ion have? f) What is the number of lone electron pairs in the LS of the SeO3 ion?10. The following Lewis structures for (a) HCN, (b) C3H;, (c) SnOz, (d) BF3, (e)HOF are incorrect. Explain what is wrong with each one and give a correct structure for the molecule. (Relative positions of atoms are shown correctly.) (a) H-ëN (b) HCC-H (c) 0-Sn-0 (d) :F B :F: (e) H-O-F:Calculate AH,ryn for rxn Ca(s) + 1/2 O2(g) + CO2(g) → CaCO;(s)
- QUESTION 5 (31 MARKS) (a) (i) Draw a pz orbital and a d?-y² orbital. (4) (ii) What are the differences between a 5pz orbital and a 4d,- orbital in the H atom? (6) (b) (i) Draw the Lewis structure of methanol, CH3OH(8). (3) (ii) Show with a simple diagram how methanol dissolves in water. Explain. (2) (c) How does the energy and length of the carbon-oxygen bond in CH3OH(e) compare with the carbon-oxygen distance in carbon monoxide? Explain. (5) (d) Chemical bonds can be classified as polar covalent, according to and (3) (e) Chemical bonds can also be classified as single or number of according to the (2) (f) Draw the Lewis structure(s) for SO3F. Explain the structure which you have drawn. (6)Draw a Lewis structure for the C4Hg molecule usıng the connectivity shown in the spacefillıng model in the window. Gray = C; white = H; red = 0; blue = N; dark green = Cl; brown = Br; light green = F; purple = I; yellow = S; orange = P. %3D Use your drawing to answer the following questions. The total number of electrons in C-H bonds = The number of C-C single bonds =| The number of C=C double bonds = Previous Next The total number of unshared pairs %3DSelect the most acidic hydrogen in the molecule below. Gray = C; white = H; red = 0; blue = N; dark green = Cl; brown Br; light green = F; purple = 1; yellow = S; orange = P. • Double click to select atoms. ● ● ● ● You can zoom in and out using the mouse scroll wheel (or pinch to zoom on touch screens). If there is more than 1 correct answer, just give one. Formal charges are not shown. You will need to deduce them from structure.
- Draw ALL chemically reasonable Lewis structures (including resonance structures) of 5O2F2 having S as the central atom. Propose reasons why the linearly-connected =tructure F-O-S-O-F is not found in nature.(b) The Murchison meteorite that landed in Australia in 1969 contained 92 different amino acids, including 21 found in Earth organism A skeleton structure (single bond only) of one of these extraterrestrial amino acids is shown below. Draw a Lewis structure, and identify any atoms having a nonzero formal charge. H3N. C ČH2 ČH3 (c) Draw the orbital diagrams and Lewis symbols to depict the formation of Na* and CI ions from the atoms. Give the formula of the compound formed. (d) The predicted bond length for HF is 109 pm (the sum of the covalent radii of H, 37 pm and F, 72 pm), however the actual bond length for HF is shorter (92 pm). It was observed that the difference between predicted and actual bond lengths becomes smaller going down the halogen group from HF to HI Describe these observationsThe Pauling electronegativity of Cl is 3.2 while that of Br is 3.0. Estimate the bond dissociation energy of D(Cl-Br) .bond in kJ/mol given: D(Br-Br)=224 kJ/mol, D(Cl-) .(CI)=160 kJ/mol.) (1.0 eV = 96.5 kJ/mol 196 228 204 219 237