1. Which answer option represents the ground state electron configuration for a neutral Be atom? Group of answer choices a. 1s22s1 b. 1s22s22p2 c. 1s4 d. 1s12s1 e. 1s22s2

2. What is the principal quantum number (n) for the highest energy electrons in the ground state electron configuration for the silicon atom? Enter your answer as a number.

3. How many valence electrons are in the ground state electron configuration for phosphorus? Enter your answer as a number.

4. Which set of quantum numbers is not allowed?

Group of answer choices

a. n = 3, l = 1, m_l = -1

b. n = 3, l = 2, m_l = +2

c. n = 1, l = 0, m_l = 0

d. n = 3, l = 1, m_l = 0

e. n = 2, l = 2, m_l = +1

5. Select the set of quantum numbers that describe the electron that is highest in energy.

Group of answer choices

a. n = 1, l =0, m_l = 0, m_s = +1/2

b. n = 4, l =0, m_l = 0, m_s = +1/2

c. n = 1, l =0, m_l = 0, m_s = -1/2

d. n = 3, l =1, m_l = 1, m_s = +1/2

e. n = 4, l =1, m_l = 1, m_s = -1/2

6. What is the maximum number of electrons that the n = 6 energy level may contain?

PLEASE ANSWER QUESTIONS 1-6