Concept of Atomic Orbitals as One-Electron Wave Functions... NEET Questions

Physical Chemistry - Atomic Structure

Concept of Atomic Orbitals as One-Electron Wave Functions... MCQ Questions


1.
What does the wave function Ψ represent in quantum mechanics?
A.
Probability of finding an electron
B.
Energy of an electron
C.
Position of an electron
D.
Spin of an electron
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ANSWER :
A. Probability of finding an electron
2.
Which physical quantity is represented by Ψ²?
A.
Angular momentum of an electron
B.
Probability density of an electron
C.
Velocity of an electron
D.
Mass of an electron
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ANSWER :
B. Probability density of an electron
3.
The number of radial nodes in a 2s orbital is:

NEET - 2017

A.
0
B.
1
C.
2
D.
3
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ANSWER :
B. 1
4.
For a hydrogen atom, the wave function Ψ is a function of:
A.
Only distance r
B.
Only energy n
C.
Both r and θ
D.
All quantum numbers
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ANSWER :
D. All quantum numbers
5.
What happens to Ψ² as r increases for a 1s orbital?
A.
Always increases
B.
Always decreases
C.
First increases, then decreases
D.
Remains constant
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ANSWER :
C. First increases, then decreases
6.
The probability of finding an electron is highest at:
A.
The nucleus
B.
The first Bohr orbit
C.
Infinite distance
D.
At a node
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ANSWER :
B. The first Bohr orbit