1. An atom with the following electron configuration is what kind of element?
1s2 2s2 2p6 3s1
A. halogen
B. alkaline earth metal
C. transition metal
D. pnictogen
E. chalcogen
F. alkali metal
7. An atom with the following electron configuration is what kind of element?
1s2 2s2 2p6 3s2 3p5
A. pnictogen
B. chalcogen
C. halogen
D. alkali metal
E. alkaline earth metal
F. noble gas
14. An atom with the following electron configuration is what kind of element?
1s2 2s2 2p6 3s2
A. alkaline earth metal
B. chalcogen
C. transition metal
D. halogen
E. alkali metal
F. pnictogen
17. Which electron configuration represents the atom that would require the least amount of energy to remove an electron from the neutral atom in the gaseous state?
A. [Ar] 4s2 3d10 4p3
B. [Ne] 3s2 3p2
C. [Ne] 3s2 3p6
D. [Ne] 3s2 3p4
E. [Ne] 3s2 3p5
F. [Ar] 4s2 3d10 4p4
18. An atom with the following electron configuration is what kind of element?
1s2 2s2 2p6 3s2 3p4
A. alkali metal
B. chalcogen
C. transition metal
D. alkaline earth metal
E. pnictogen
F. halogen
20. Which electron configuration represents the atom with the least tendency to gain an electron in the gaseous state?
A. [Ne] 3s2 3p3
B. [Ar] 4s1
C. [He] 2s2 2p3
D. [Ar] 4s2 3d10 4p1
E. [Ne] 3s2 3p1
F. [Ar] 4s2
21. Select the electron configuration that is correct for an atom in the ground state.
A. 1s2 2s1 2p6 3s1
B. 1s2 2s2 2p5 3s2
C. 1s2 2s2 2p6 3s2
D. 1s2 2s2 2p4 3s2
E. 1s1 2s2 2p6 3s2
F. 1s2 2s1 2p6 3s1
23. Select the electron configuration that is incorrect for an atom in the ground state.
A. 1s2 2s2 2p6 3s2 3p3
B. 1s2 2s2 2p6 3s2 3p4
C. 1s2 2s1 2p6 3s2 3p3
D. 1s2 2s2 2p6 3s2 3p5
E. 1s2 2s2 2p6 3s2 3p6
F. 1s2 2s2 2p6 3s2 3p2
24. Which electron configuration represents the atom that would require the greatest amount of energy to remove an electron from the neutral atom in the gaseous state?
A. [Kr] 5s2 4d10 5p6
B. [Kr] 5s2 4d10 5p5
C. [Kr] 5s2
D. [Ne] 3s2 3p5
E. [Ne] 3s2
F. [Kr] 5s2 4d10 5p3