Question

Molecules posses _____________ types of internal energy.

(a) one

(b) two

(c) three

(d) four

This question was posed to me in my homework.

I need to ask this question from Measurement of Volume in section Pulmonary Function Analysers of Biomedical Instrumentation

Answer 1

Right option is (c) three

Explanation: Molecules possess three types of internal energy—electronic, vibrational and rotational. When a molecule absorbs radiant energy, it can increase its internal energy in a variety of ways. The various molecular energy states are quantized and the amount of energy necessary to cause any change in any one of the above energy states would generally correspond to specific regions of the electromagnetic spectrum.