Question

A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion? A. -3 B. -2 C. 0 D. +3

Answer 1

7p = 7*+1 = +7
+8n = 8*0 = 0
10e = 10*-1 = -10
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sum ............= ?