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Q.

Some statements about valence bond theory are given below :

i) The strength of bond depends upon extent of overlapping.

ii) The theory explains the directional nature of covalent bond.

iii) According to this theory oxygen molecule is paramagnetic in nature.

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a

all are wrong

b

only i and iii are correct

c

all are correct

d

only i and ii are correct

answer is C.

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Detailed Solution

. According to VBT

(i) Greater the extent of overlapping of orbitals,

stronger the bond(i) is true

(ii) Direction of the bond will be in the direction of the overlapping orbitals(ii) is correct

(iii) VBT cannot explains Paramagnetic behaviour of O2 (iii) is false

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