Examveda

Three consecutive absorption lines at 64.275 cm-1, 77.130 cm-12 and 89.985 cm-1 have been observed in a microwave spectrum for a linear rigid diatomic molecule. The moments of inertia $${I_A}$$ and $${I_B}$$ are ($${I_A}$$ is with respect to the bond axis passing through the centre of mass and $${I_B}$$ is with respect to an axis passing through the centre of mass and perpendicular to bond axis)

A. both equal to $$\frac{{{\hbar ^2}}}{{12.855\,hc}}$$  g-cm2

B. zero and $$\frac{{{\hbar ^2}}}{{12.855\,hc}}$$  g-cm2

C. both equal to $$\frac{{{\hbar ^2}}}{{6.427\,hc}}$$  g-cm2

D. zero and $$\frac{{{\hbar ^2}}}{{6.427\,hc}}$$  g-cm2

Answer: Option B


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