chemical energy
a) potential energy stored in the bonds between atoms

electrical energy
b) electromagnetic energy that travels in waves

radiant energy
c) internal energy caused by vibrations of atoms and molecules

thermal energy
d) the movement of an electrical charge

C

Explanation:

do i just geuss becouse thats all you gave me

not clear

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.