Is C2 (+4) paramagnetic or diamagnetic
σ and σ* orbital can have maximum of 2 electrons
π and π* orbital can have maximum of 4 electrons
1 C atom have 6 electrons
Here, number of C is 2
so, total number of electrons in C2 is 12
Since charge is +4
Total number of electron = 8
So, total number of electrons to fill is 8
order of filling of orbitals is:
σ1s σ*1s σ2s σ*2s π2p σ2p π*2p σ*2p
Lets fill the orbital
the filled orbital is σ1s2 σ*1s2 σ2s2 σ*2s2
The orbital σ*2s2 has no unpaired electrons
So, it is diamagnetic in nature
Answer: diamagnetic
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