Which are true comparisons of alpha and beta decay? check all that apply.
a. beta radiation damages a cell more than alpha radiation.
b. beta radiation can damage a higher number of cells than alpha
radiation.
c. beta particles can travel farther than alpha particles.
d. beta particles are bigger than alpha particles.

See below  

Explanation:

A. False. Alpha radiation is more damaging to the cell than beta radiation.

B. True. Beta radiation is less damaging, but it has greater penetrating power, so it can damage more cells.

C. True. Beta particles have greater penetrating power than alpha particles.

D. False. Beta particles are electrons. Alpha particles are much larger helium nuclei.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.