Consider the lewis structure for h c h c h o c h c h

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15. Consider the Lewis structure for H C H C H O C H C H H Carbon 1 The dots around O did not print. Please put 4 dots around the O in the above diagram. Which statement about the molecule is false? (a) C-1 is sp 2 hybridized (b) Oxygen is sp 2 hybridized (c) the molecule contains 28 valence electrons (d) the molecule contains 1 pi and 11 sigma bonds (e) all statements are true Chapter 6 Questions 16. In the group (a) , which has the greatest ionization energy, electron affinity, and electronegativity: (a) Al, P, O. For groups (b) & (c), which has the greatest ionization energy (b) C, N, O (c) Li, Be, B 17. In each group of three, which is the largest atom: (a) O, K, Rb (b) C, F, Br 18. In each pair select the ionic compound with the greatest lattice energy. (a) NaCl or NaF (b) CaCl 2 or AlCl 3 19. Draw the electron configuration for (a) O 2- (b) Fe 2+ 20. Considering K and Ca arrange them from highest to lowest ionization energy for (a) first ionization energy (b) second ionization energy 21. Which has the greatest electron affinity and first ionization energy in each group
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22. Calculate the net energy change ( in kilojoules per mole) that takes place on formation of KF(s) from the elements: K(s) + ½ F 2 → KF(s) Heat of sublimation of K = 89.2 kJ/mol Bond dissociation energy for F 2 = 158 kJ/mole Electrostatic interactions in KF = -821 kJ/mol E ea F = -328 kJ/mol E i K = 418.8 kJ/mol Chapter 5 (Electronic Structure and Atoms) Electromagnetic Radiation 23. What is the wavelength of an infrared wave whose velocity is 3 X 10 10 cm/s and whose frequency is 9 X 10 11 s -1 ? 24. What is the minimum wavelength of a photon of light that can excite an electron in the hydrogen atom from n = 1 to n = 8 energy level? 25. What is the minimum wavelength of a photon of light that can ionize an electron from the n = 2 level in the hydrogen atom? What is the Energy of a photon of this radiation? 26. If an electron has a mass of 9.11 X 10 -28 g, what is its wavelength if it is traveling at a rate of 8 X 10 7 cm/s. Quantum Numbers and Electron Configurations 27. Write the electron configuration of Mn using three forms. 28. Write the electron configuration for Cu and Cr. 29. Write the electron configuration for Zr 2+ and O 2- . 30. How many electrons in the outer energy level ( or how many valence electrons) in S and V? 31. What are the highest and lowest energy electrons in Sc? 32. What is the difference in ground state and excited state configuration? Write an impossible electron configuration. 33. Tell if these violate Hund’s Rule or Pauli Exclusion Principle. Which is ground state and which is excited state.
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(a) ↑_____↓ ↑_____ ↑_____ _____ s p (b) ↑_____↑ ↑_____ ↑_____ _____ s p (c) ↑_____↓ ↑_____↓ ↑_____ _____ s p (d) ↑_____ _____ ↑_____ _____ s p 34. How many electrons can have the quantum numbers n = 3, l = 1, m l = 1?
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