When nitrogen combines with hydrogen to form a compound, its formula will be: A. NH3 B. N3H C. NH4 D. NH Answer is A: N requires 3 electrons to complete its outer shell (it occurs in column VA of the periodic table), while H requires one. Hence three H must attach to a single N.
Option A. N calls for three electrons to finish its outer shell (it happens in column VA of the periodic table), while H calls for one. Hence 3 H must connect to a single N and it form a molecule NH3
