1

IIT-JEE 1997

Subjective
A compound of vanadium has a magnetic moment of 1.73 BM. Work out the electronic configuration of the vanadium ion in the compound.

Answer

1s2, 2s2 2p6, 3s2 3p6 3d1
2

IIT-JEE 1994

Subjective
Using the VSEPR theory, identify the type of hybridization and draw the structure of OF2. What are the oxidation states of O and F?

Answer

+2, -1
3

IIT-JEE 1993

Subjective
The dipole moment of KCl is 3.336 $$\times$$ 10-29 Coulomb meters which indicates that it is a highly polar molecule. The interatomic distance between K+ and Cl- in this molecule is 2.6 $$\times$$ 10-10. Calculate the dipole moment of KCl molecule if there were opposite charges of one fundamental unit located at each nucleus. Calculate the percentage ionic character of KCl.

Answer

80.09 %
4

IIT-JEE 1991

Subjective
Arrange the following :

Increasing strength of hydrogen bonding (X-H-X):

O, S, F, Cl, N

Answer

S < Cl < N < O < F

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