Spectrum of the Hydrogen Atom NEET Questions

Physical Chemistry - Atomic Structure

Spectrum of the Hydrogen Atom MCQ Questions


7.
The Pfund series of hydrogen spectrum corresponds to transitions ending at:
A.
n = 1
B.
n = 5
C.
n = 4
D.
n = 3
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ANSWER :
B. n = 5
8.
Which of the following series ends at n = 1?
A.
Paschen series
B.
Balmer series
C.
Pfund series
D.
Lyman series
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ANSWER :
D. Lyman series
9.
The Rydberg constant for hydrogen has the value:
A.
Both A and B
B.
109,677 cm⁻¹
C.
1.097 × 10⁷ m⁻¹
D.
10,967 cm⁻¹
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ANSWER :
A. Both A and B
10.
The Rydberg formula for wavenumber of hydrogen spectral lines is:
A.
ν̄ = R(1/n₁² - 1/n₂²)
B.
ν̄ = R(1/n₁² + 1/n₂²)
C.
ν̄ = R(n₂² - n₁²)
D.
ν̄ = R/n²
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ANSWER :
A. ν̄ = R(1/n₁² - 1/n₂²)
11.
In the Balmer series, the value of n₁ is:
A.
1
B.
2
C.
3
D.
4
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ANSWER :
B. 2
12.
The first line of Balmer series corresponds to transition:
A.
n = 4 → n = 3
B.
n = 5 → n = 2
C.
n = 3 → n = 2
D.
n = 2 → n = 1
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ANSWER :
C. n = 3 → n = 2