Main axis of diatomic molecule is z. The orbitals px and py overlap to form
-molecular orbital
σ-molecular orbital
δ-molecular orbital
No bond is formed
Using MOT, compare species and choose the inncorrect option.
have higher bond order than
is less stable
is diamagnetic while is paramagnetic
Both are paramagnetic
Which of the following structure of a molecule is expected to have three bond pairs and one lone pair of electrons?
Octahedral
Trigonal planar
Pyramidal
Tetrahedral
Which of the following is paramagnetic ?
B2
C2
N2
F2
A.
B2
Paramagnetic species has unpaired electron.
(i) B2 = 5 + 5 = 10 = σ1s2, σ*1s2, σ2s2, σ*2s2,
(ii) C2 = 6 + 6 =12 = σ1s2, σ*1s2, σ2s2, σ*2s2,
(iii) N2 = 7 + 7 = 14 = σ1s2, σ*1s2, σ2s2, σ*2s2,
(iv) F2 = 9 + 9 = 18 = σ1s2, σ*1s2, σ2s2, σ*2s2,
Therefore, B2 is paramagentic because it has unpaired electron.
The trigonal bipyramidal geometry results from the hybridisation :
dsp3 or sp3d
dsp2 or sp2d
d2sp3 or sp3d2
d3p2 or d2p3