midterm_sample - Name: CHEM 131 Inorganic Chemistry I...

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Name: Student ID: CHEM 131 Inorganic Chemistry I Mid-term Test Paper (sample) Part I: Multiple Choice Questions (2 points each, 40 points in total) 1. Which of the following species are hydrogen-like: (a) H + (b) He + (c) He - (d) Li + 2. Atoms emit visible and ultraviolet light: (a) as electrons jump from lower energy levels to higher levels. (b) as the atoms condense from a gas to a liguid. (c) as electrons jump from higher energy levels to lower levels. (d) as they are heated and the solid melts to form a liquid. (e) as the electrons move about the atom within an orbit. 3. A hydrogen atom is electronically considered to be in its excited states (a) when its electron occupies the lowest energy level. (b) when its electron does not move around. (c) when its electron occupies higher energy levels. (d) when the atom does not move around. (e) when the atom is not heated. 4. How many electronic excited states can an atom have? (a) 1 (b) 2 (c) 3 (d) 4 (e) none of above 5. The equation E(n) = - Z 2 R/n 2 is applicable for any kind of atoms (a) True (b) False 6. 4f and 5f atomic orbitals (a) have the same wavefunctions. (b) have the same radial wavefunctions. (c) have the same numbers of spherical nodes and angular nodes. (d) have the same angular wavefunctions. 7. The π u and π g molecular orbitals of a diatomic molecule correspond to molecular orbitals, respectively. (a) bonding and bonding (b) bonding and anti-bonding (c) anti-bonding and bonding (d) anti-bonding and anti-bonding 8. Which of the following electron configurations is for Ti 3+ (the atomic no. of Ti is 22)? (a) [Ar]3d 1 (b) [Ar]4s 1 (c) [Ar]4s 2 3d 2 (d) [Ar]3d 4 (e) [Ar]4s 1 3d 3 9. An atom of nickel has unpaired electrons and is . Atomic number of nickel is 28. (a) 0, diamagnetic (b) 2, diamagnetic (c) 3, paramagnetic (d) 2, paramagnetic (e) 8, paramagnetic
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10. Which statement is false ? A sigma molecular orbital (a) may result from head-on overlap of p atomic orbitals.
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This note was uploaded on 02/27/2010 for the course CHEM CHEM131 taught by Professor Lin during the Fall '09 term at HKUST.

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midterm_sample - Name: CHEM 131 Inorganic Chemistry I...

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