Question

what is the valency of Cr in CrO5
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Answer 1

Answer:

The double-bonded O-atoms retains 4 electrons while the single-bonded retains 2 electrons.in that case one Cr-atom loses 6 electrons & it retains a positive charge of +6.so, its O.N. becomes +6.

Explanation:

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Answer 2

Answer:

Chromium is an element in the periodic table with atomic number \[24\] and electronic configuration\[\left[ {Ar} \right]3{d^5}4{s^1}\] . Thus chromium atoms can show a maximum valency of \[6\] by losing six electrons. The \[Cr{O_5}\]​ molecule contains one chromium central atom which is bonded to five oxygen atoms.

Explanation:

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