Q. What is the oxidation number of $C r$ in $N a_{2} C r_{2} O_{7} ?$

3436 237 JIPMERJIPMER 2019Chemical Bonding and Molecular Structure Report Error

A

2

B

6

C

10

D

16

Solution:

Solution $N a_{2} C r_{2} O_{7}$ $2 (+ 1) + 2 x + 7 (- 2) = 0 = x = + 6$