Q.

Consider a bent molecule, such as H2Se, in which the central atom has two lone pair of electrons. The electro negativities of H and Se are 2.1 and 2.4 respectively. Based on these values and on consideration of molecular geometry, the H-Se bond can be considered almost and the molecule is …..

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a

polar; polar

b

non-polar; non-polar

c

polar; non-polar

d

non-polar; polar

answer is D.

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Detailed Solution

Difference between two bonded atoms is 0.3 less than 1.9,bond is non polar. Since molecule is unsymmetrical(bent) it is having dipole moment. Molecule is polar 

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Consider a bent molecule, such as H2Se, in which the central atom has two lone pair of electrons. The electro negativities of H and Se are 2.1 and 2.4 respectively. Based on these values and on consideration of molecular geometry, the H-Se bond can be considered almost and the molecule is …..