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Q

Which of the following have the same number of valence electrons?

a) Nitrogen, Arsenic, Bismuth

b) Boron, Silicon, Arsenic

c) Helium, Neon, Fluorine

d) Potassium, Arsenic, Br

A

Answer: A

Nitrogen, Arsenic, and Bismuth are group 5A (or group 15 VA) elements, also called pnictogens, and have five valence electrons each.

5 months ago
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