Question

Which molecules will not exhibit rotational spectra??
NO
Co2
So2
HF

Answer 1

Explanation:

Hydrogen gas is liberated when an acid reacts with a metal. For example, when zinc metal reacts with dil. hydrogen is evolved and salt zinc chloride is formed as: It can be tested by bringing a burning candle near the gas. The candle continues burning with a pop sound.

Answer 2

Answer:

Molecules only show rotational spectra if they possess permanent dipole moment. Therefore, non polar molecules will not show rotational spectra.

Out of these, CO2 is a linear molecule so it is non-polar. It does not show rotational spectrum.

Explanation: