Determine the number of valence electrons for each of the atoms. Enter each answer as a numeral. For example, if an atom has two valence electrons, enter the number 2.

Question

B:

P:

O:

Ne:

Answer 1

B: group 13 = 3 valence electrons (1s2 2s2 2p1)

P: group 15 = 5 valence electrons (1s2 2s2 2p6 3s2 3p3)

O: group 16 = 6 valence electrons (1s2 2s2 2p4)

Ne: group 18 = 8 valence electrons (1s2 2s2 2p6)

bolded electrons are valence electrons