First slide

Quantum mechanical model of the atom

Question

Which statements are correct ?

Moderate

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

Solution

p,d,f orbitals are directional
an orbital should have antiparallel spins
electron can have both particle and wave nature

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