(A) : Quantum mechanical model of atom is based on dual nature of matter.
(R) : In quantum mechanics, electron is described as a 3D wave.

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Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’.

‘A’ is true but ‘R’ is false

Both 'A' and 'R' are false

Both ‘A’ and ‘R’ are true and ‘R’ is not the correct explanation of ‘A’

answer is B.

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Detailed Solution

The quantum mechanical model of atom is based upon the dual nature of electron, i.e., the electron is not only a particle but has a wave character.
The quantum mechanical model of atoms describes the three-dimensional position of the electron .

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