Consider an atom that has an electron in an excited state. The electron falls to a lower energy level. What effect does that have on the electron? A.
The electron releases energy in the form of light.
ОВ.
c.
The electron absorbs energy in the form of light.
The electron retains its energy without any change.
The electron transfers its energy to other electrons.
D.

Dmight be the correct answer

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

Ibelieve it is b. proton.hope my answer has you : )

The velocity would be 2