Q.

Which statements are correct ?

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a

Electrons in motion behave as if they are waves

b

s-orbital is non-directional

c

An orbital can accommodate a maximum of two electrons with parallel spins

d

The energies of the various sub-levels in the same shell of H-atom are in order s > p > d > f

answer is A.

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Detailed Solution

p,d,f orbitals are directionalan orbital should have antiparallel spinselectron can have both particle and wave nature
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