Some Basic Concepts Of Chemistry Question 178

Question: If NA is Avogadro?s number then number of valence electrons in 4.2 g of nitride ions (N3)

Options:

A) 2.4 NA

B) 4.2 NA

C) 1.6,NA

D) 3.2,NA

Show Answer

Answer:

Correct Answer: A

Solution:

14 gm N3 ions have =8NA valence electrons 4.2gm of N3 ions have =8NA×4.214=2.4NA



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