1.

Select the incorrect statement(s) about C_(2) molecule

Answer»

It exists in vapour PHASE
It CONTAINS 12 electrons out of which 8 are present in bonding ORBITALS and 4 in antibonding orbitals.
It is paramagnetic in nature.
It contains double bonds of which both are `pi`- bonds.

Solution :`C_(2)(12):KKsigma2sS^(2)sigma***2s^(2)pi2p_(x)^(2)=pi2p_(y)^(2)`
It exists in vapour phase and is diamagnetic in nature because it contains no unpaired electrons.
Since four electrons are present in TWO `p_(i)`- molecular orbitals so the double bond contains both` pi`- bonds.


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