Q. The oxidation number of nitrogen in nitric acid is:

1373 186 Uttarkhand PMTUttarkhand PMT 2005 Report Error

A

$4$

B

$5$

C

$- 4$

D

$- 5$

Solution:

Suppose the oxidation number of nitrogen $= x$
$∴ 1 + x + 3 (- 2) = 0$
$1 + x + (- 6) = 0$
$∴ x = + 5$