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


7.
The total number of nodes in a 3s orbital is:
A.
Three
B.
One
C.
Two
D.
Zero
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ANSWER :
C. Two
8.
Which of the following statements about the wave function ψ is INCORRECT?
A.
ψ directly gives the probability of finding the electron
B.
ψ depends on coordinates of the electron
C.
ψ is a mathematical function
D.
ψ has no physical meaning by itself
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ANSWER :
A. ψ directly gives the probability of finding the electron
9.
The probability density |ψ|² for a 1s orbital is maximum at:
A.
Infinite distance from the nucleus
B.
A finite distance from the nucleus
C.
The Bohr radius (52.9 pm)
D.
The nucleus itself (r = 0)
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ANSWER :
D. The nucleus itself (r = 0)
10.
The general formula for the number of radial nodes in any orbital is:
A.
2l + 1
B.
n - 1
C.
n - l - 1
D.
n + l
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ANSWER :
C. n - l - 1
11.
Wave functions of hydrogen or hydrogen-like species (one-electron systems) are called:
A.
Hybrid orbitals
B.
Antibonding orbitals
C.
Molecular orbitals
D.
Atomic orbitals
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ANSWER :
D. Atomic orbitals
12.
The probability of finding an electron at a point within an atom is proportional to:
A.
|ψ|² at that point
B.
|ψ| at that point
C.
1/ψ at that point
D.
ψ at that point
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ANSWER :
A. |ψ|² at that point