Chem 105a SI Worksheet #8 (ow) PDF

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Chem 105a SI Worksheet #8 (ow)...

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Michael Wong [email protected]

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Chapter 9 Worksheet

Topics to Review on Your Own: Effective nuclear charge Identifying valence electrons in main group elements vs. transition metals Historical stuff Shielding and penetration

3/23-3/27

Chem 105a - Dr. Ow www.usc.edu/si

Life Hack of the Week: Tilting your head to the right and slightly up makes you look more attractive. Tilting it to the left makes you look more intelligent.

1. Answer parts (a) – (d) below: a) Does the following electron configuration correspond to an atom at ground state or an excited state? Identify the atom. 1s22s23p1 b) Identify the element with the ground state electron configuration [Ne]3s23p4. c) Does the following electron configuration correspond to an atom at ground state or an excited state? Identify the atom. [Kr]5s24d65p26s1 d) Identify the element with the ground state electron configuration that contains three unpaired 6p electrons.

2. Write the full electron configurations for the following atoms; order the orbitals according to increasing energy. a) V b) Cu c) Ra 3. Write the noble gas electron configurations for the following ions; order the orbitals according to increasing energy. Then, label each as paramagnetic or diamagnetic. a) Cr2+

b) Mn4+

c) Zn2+

d) P3-

4. Arrange the following species in order from longest to shortest radius: a) Ne, Ba, Ni, Nb, V b) Ti2+, Fe2+, Ni2+, Zn2+ c) S2- , Ca2+, K+, Cl-, Ar d) Te2- , In3+, Rb+, Br-, Se2-

5. Consider a neutral tin atom and answer the following questions: a) How many orbitals have 5 nodes? ________ b) How many electrons have l = 2 and ml = -2? ________ c) What is the Zeff of an electron in a 3s orbital? ________ d) How many electrons have ml = +1 and ms = -1/2? ________ e) Is the Sn2+ ion diamagnetic? ________...