chemical-aritmatic

Question: If ${N_A}$is Avogadro’s number then number of valence electrons in 4.2 g of nitride ions $({N^{3 - }})$

1) 2.4 ${N_A}$

2) 4.2 ${N_A}$

3) $1.6\,{N_A}$

4) $3.2\,{N_A}$

Solution:

Explanation: No Explanation

atomic-mass

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