Q148. If NA is Avogadro's number, what is the total number of valence electrons in 4.2 g of nitride ions (N3-)?Chemistry — NUST Mock By IBAGRADS 2 — Question 148 of 200A. 2.4 NAB. 4.2 NAC. 1.6 NAD. 3.2 NAPractice more Chemistry MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →