Question

If na is avogadro's number then number of valence electrons in 4.2 g of nitride ions n3- is

Answer 1

Nitride ion is a stable ion, meaning it has 8 valence electrons. The no of moles of nitride ion in 4.2g is 4.2/14=0.3 mol. So the no of valence electrons is equal to 8x0.3xNa, where Na is avogadros no. whose value is (6.022x10^23).

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