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  • In which of the following oxoanion the oxidation state of central atom is not same as that of its group number in the periodic table?  Option: 1</

In which of the following oxoanion the oxidation state of central atom is not same as that of its group number in the periodic table?

 

Option: 1

MnO_{4}^{-}
 


Option: 2

Cr_{2}O_{7}^{-2}


Option: 3

VO_{4}^{3-}

 


Option: 4

FeO_{4}^{2-}


Answers (1)

best_answer

(A) MNO_{4}^{-} = + 7 ; [AR]^{18} 3d^{5} 4S^{2} = 7.

(B) Cr_{2}O_{7}^{2-} = + 6 ; [AR]^{18} 3d^{5} 4s^{1} = 6.

(C) VO_{4}^{3-} = + 5 ; [AR]^{18} 3d^{3} 4s^{2} = 5.

(D) FeO_{4}^{2-} = + 6 ; [AR]^{18} 3d^{8} 4s^{2} = 8.

Posted by

manish painkra

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