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  4. The IUPAC name of K 2[ Cr ( CN )2 O 2( O 2)( NH 3)] is:

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Q. The IUPAC name of $K _{2}\left[ Cr ( CN )_{2} O _{2}\left( O _{2}\right)\left( NH _{3}\right)\right]$ is:

Coordination Compounds

Solution:

image

Oxidation state of chromium $=x+2(-1)+(-2)+$ $2(-2)+(0)=-2$

$\therefore \,\,\, x=+6$

As per $IUPAC$ name.

Complex is anionic, so metal ion will be named as chromate with $+6 $ oxidation state. So, potassium amminedicyanodioxoperoxochromate(VI).