Question

match the number of valence electrons present for each of the following main group nonmetals: hydrogen choose boron choose 4 2 3 10 5 6 8 1 7 carbon choose nitrogen choose phosphorous choose oxygen choose sulfur choose fluorine choose chlorine choose

Explanation:

Step1: Recall valence - electron rules

Valence electrons are the electrons in the outermost shell of an atom. For main - group elements, the number of valence electrons can be determined by the group number (for groups 1 - 2 and 13 - 18). Hydrogen is in group 1, so it has 1 valence electron. Boron is in group 13, so it has 3 valence electrons. Carbon is in group 14, so it has 4 valence electrons. Nitrogen is in group 15, so it has 5 valence electrons. Phosphorus is in group 15, so it has 5 valence electrons. Oxygen is in group 16, so it has 6 valence electrons. Sulfur is in group 16, so it has 6 valence electrons. Fluorine is in group 17, so it has 7 valence electrons. Chlorine is in group 17, so it has 7 valence electrons.

Answer:

Hydrogen: 1
Boron: 3
Carbon: 4
Nitrogen: 5
Phosphorous: 5
Oxygen: 6
Sulfur: 6
Fluorine: 7
Chlorine: 7