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the complex ion which has no d electrons in the central metal atom is [Mno4]- [co(NH3)6]3+ [Fe(CN)6]3- [Cr(H2O)6]3+. how to solve this

the complex ion which has no d electrons in the central metal atom is 



  1. [Mno4]-

  2. [co(NH3)6]3+

  3. [Fe(CN)6]3-

  4. [Cr(H2O)6]3+. how to solve this 

Grade:12

4 Answers

Roshan Mohanty
64 Points
8 years ago

in option A oxd state of Mn is +7
so there will be no d electrons in the central atom 

TANAYRAJ SINGH CHOUHAN
65 Points
8 years ago

MnO4- is the correct answer as oxidation no. of Mn is +7 and electrons are not present in its d-orbital.

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vishal ojha
35 Points
8 years ago

[MnO4]-  AS ITHS OXIDATION STATE IS +7 AND 5 ELECTRONS IN D ORBITAL AND 2 ELECTRONS IN S ORBITAL....A TOTAL OF 7

Shivam Tiwari
21 Points
4 years ago
[MnO4] is the right option...because its oxidation state is 7 ....so there will be no d electrons in the central atom

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