The number of bridging ligands and the number of bromine atoms present per molecule of the compound decaammine- $μ$ -hydroxodichromium(III) bromide are respectively:

1, 5

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2, 6

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1, 4

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1, 3

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Solution

The correct option is A $1, 5$
The structure of the compound is $[(N H_{3})_{5} C r - (O H) - C r (N H_{3})_{5}] B r_{5}$ .

Here, the ligand hydroxo $(O H)$ is behaving as bridging ligand.

There are overall 2 chromium atoms and oxidation state of each Cr atom is +3.

So, to balance the charge, there should be 5 bromine atoms.

Option A is correct.

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The number of bridging ligands and the number of bromine atoms present per molecule of the compound decaammine-μ-hydroxodichromium(III) bromide are respectively:

The number of bridging ligands and the number of bromine atoms present per molecule of the compound decaammine- $μ$ -hydroxodichromium(III) bromide are respectively: