Question

Determine the number of valence electrons in the neutral nonmetals

How many valence electrons are in a neutral atom of As, Se, and Br, respectively?
Express your answer as three integers separated by commas.

Answer 1

Neutral nonmetals have valence electrons determined by their position in the periodic table. As, Se, and Br have 5, 6, and 7 valence electrons, respectively.

Step-by-step explanation:

The number of valence electrons in neutral nonmetals can be determined by looking at their position in the periodic table. As, Se, and Br are all nonmetals located in groups 15, 16, and 17, respectively. The units digit of the group number represents the number of valence electrons. So, As has 5 valence electrons, Se has 6 valence electrons, and Br has 7 valence electrons.