Question

the total no of valence electrons in 4.2 g of N3- ion is​

Answer 1

Answer:

Explanation:

Moles of N−3 ion =4.242=0.1

Each nitrogen atom has 5 valence electrons.

Therefore, total number of electrons in N−3 ion =16

Total number of electrons in 0.1 mole or

4.2 g of N−3ion=0.1×16×NA

=1.6NA

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