Atom is the basic building block of. The subatomic particles are, and.
Electron turn around the .
The mass of the atom is the sum of the and .
The numbers of electrons and protons are in the neutral atom.
The charge of proton is but the charge of electron is .
The charge of neutron is .

Word to be inserted into sentences:
zero, equal, protons(3), nucleus, positive, negative, substance, neutrons(3), electrons​

kamilya14957    3   22.10.2020 11:20    6