MCQ
A diatomic molecule has how many degrees of freedom
- A$3$
- B$4$
- ✓$5$
- D$6$
✓
Answer
Correct option: C.
$5$
c
Number of degree of freedom $d =3 N -1$
Number of degree of freedom $d =3 N -1$
where $N$ is the number of atoms in a molecules
In diatomic molecules, $N =2$
$\Longrightarrow \; d =3(2)-1=5$
Hence diatomic molecule has $5$ degrees of freedom (3 translational and 2 rotational).
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