1.

Which of the following MO s have one nodal plane ? .

Answer»

`SIGMA 1S`
`sigma^(**) 1s`
`sigma 2p_(Z)`
`sigma^(**)2p_(z)`

Solution :All bonding `piMO` s and antibonding `sigma ^(**) MO s` and `overset(**)sigma 2p_(z)` have one nodal PLANE


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