Answer:
Empirical formula is NH₃
Step-by-step explanation:
Given data:
Percentage of hydrogen = 82% 
Percentage of nitrogen = 18% 
Empirical formula = ? 
Solution: 
Number of gram atoms of H = 18 / 1.01 = 17.8 
Number of gram atoms of N = 82 / 14 = 5 .9
Atomic ratio: 
 H : N
 17.8/5.9 : 5.9/5.9
 3 : 1 
H : N = 3:1
Empirical formula is NH₃