B. is ur answer I bieleve
Innovated Understanding Curious Logical
A is correct!
2 electrons in the outer shell!
Mark with crown please!
Answer:

Explanation:
1. Calculate the molar mass of N₂H₄
2N = 2 × 14 = 28
4H = 2 × 1 = <u> 4</u>
Tot. = 32
2. Calculate the mass percent of N
