isotope symbol

nuclear symbol

mass number

number of protons

number of neutrons

number of electrons

atomic number

carbon-12

C

12

6

6

6

6

Ar – 40

40 Ar

18

40

18

22

18

18

iodine- 128

I

128

53

75

53

53

Ni – 59

S-34

40

19

21

19

Al-27