Question

1. groups/ family of elements are ones which:
A. Have the same number of electrons in the valence/ outer engery level
B. Have exactly 8 electrons in the valence shell outer energy level
C. Have the same number of protons in the nucleus

2. A period represents elements which?
A. Have the same number of electrons in the valence shell
B. Have exactly 8 electrons in the balance shell
C. Have the same total number of electrons
D. For each successive element one more electron is added

Answer 1

and your thinking is...?

Answer 2

1 is A?
2 is B

Answer 3

nope on second. Look at D closely