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The Elements of group 14 show ----- oxid...

The Elements of group 14 show ----- oxidation states

A

exhibit oxidation state of '+4' only

B

exhibit oxidation state of '+2' and '+4'

C

form 'M^2' -and 'M^4+' ion

D

form 'M^2+' and 'M^4+' ions.

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The correct Answer is:
B
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