Energy Levels and Hydrogen Spectrum NEET Questions

Physics - Atoms and Nuclei

Energy Levels and Hydrogen Spectrum MCQ Questions


1.
The energy of an atom is least (most negative) when its electron is in:
A.
The outermost orbit
B.
The middle orbit
C.
The orbit closest to the nucleus (n = 1)
D.
An infinitely far orbit
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ANSWER :
C. The orbit closest to the nucleus (n = 1)
2.
The lowest energy state of an atom is called the:
A.
Ground state
B.
Stationary state
C.
Excited state
D.
Ionised state
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ANSWER :
A. Ground state
3.
The energy of the electron in the ground state (n = 1) of the hydrogen atom is:
A.
−1.51 eV
B.
−13.6 eV
C.
−3.4 eV
D.
+13.6 eV
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ANSWER :
B. −13.6 eV
4.
The energy of the first excited state (n = 2) of the hydrogen atom is:
A.
−3.40 eV
B.
−1.51 eV
C.
−0.85 eV
D.
−13.6 eV
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ANSWER :
A. −3.40 eV
5.
The energy of the second excited state (n = 3) of the hydrogen atom is:
A.
−13.6 eV
B.
−0.85 eV
C.
−3.40 eV
D.
−1.51 eV
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ANSWER :
D. −1.51 eV
6.
The energy of the third excited state (n = 4) of the hydrogen atom is:
A.
−1.51 eV
B.
−3.40 eV
C.
−0.85 eV
D.
−13.6 eV
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ANSWER :
C. −0.85 eV