Answer:
5] Neutron: Charge= 0 Atomic mass unit = 1
10] Hydrogen:
Number of protons = 1
Number of neutrons = 0
Number of electrons = 1
Atomic number = 1
Helium:
Number of protons = 2
Number of neutrons = 2
Number of electrons = 2
Atomic number = 2
Note:
Atomic number = proton number
Neutron number = Mass number - atomic number
Number of electrons = number of protons
