What is the primary valency of $[C r (e n)_{3}] C l_{3}$

3

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2

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4

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1

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Solution

The correct option is A $3$
Metals in coordination compounds show two types of valencies/linkages. primary and secondary.
The primary valencies are normally ionisable and are satisfied by negative ions. Thus the given comound has primary valency of 3.

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