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Chemistry
The oxidation state of chromium is +6 in:
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Q. The oxidation state of chromium is $+6$ in:
The d-and f-Block Elements
A
Potassium chromate
11%
B
Potassium dichromate
26%
C
Both (a) & (b)
54%
D
None of these
9%
Solution:
$K _{2} CrO _{4}$
$2(+1)+ x +4(-2)=0$
$2+ x -8=0$
$x -6=0$
$x =+6$
$K _{2} Cr _{2} O _{7}$
$2(+1)+2 x +7(-2)=0$
$2+2 x -14=0$
$2 x -12=0$
$x =+6$