Question

Fundamental particle in an electromagnetic wave is?

Answer 1

Fundamental particles are the elementary entities from which all matter is made.  (A proton is a positively charged particle that weighs about one atomic mass unit [1.0073 AMU]; a neutron has about the same mass [1.0087 AMU] but no charge; and an electron has a much smaller mass [0.0005 AMU] and a negative charge.)