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The species [ML(x)]^(-) is planar with 7...

The species `[ML_(x)]^(-)` is planar with 7 pairs of electrons around 'M' in the valence shell. The value of 'x' is :

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The correct Answer is:
5
`ML_(5)` with `7e^(-)` pairs. `sp^(3)d^(3)` hybridisation with 2 l.p. shape : pentagonal planar.
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