What are the atomic number and mass number of the beta particle?

A beta particle is simply put an electron. An electron contains only a negative charge. Now, atomic number is the number of protons in the atom. Thus, the atomic number for a beta particle is 0. The mass number is the sum of protons and neutrons. Again, since this is only an electron, the mass number is 0.

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i

C) electrons encircling a nucleus with neutrons and protons