An alkaloid contains 17.28% of nitrogen and it's molecular mass is 162. The number of nitrogen atoms present in one molecular of alkaloid is

Options

A. five
B. four
C. three
D. two

Answer

D

Explanation

Suppose 1 molecules of alkaloid contains x atoms of N.
`therefore %` of `N = (14 xx x)/162 xx 100 = 17.28`
`therefore x =(17.28 xx 162)/(14 xx 100)=2`
No. of atoms in alkaloid =2