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 |
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S-34 |
||||||
40 |
19 |
21 |
19 |
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Al-27 |
Mass = # P + # N Atomic # = # P
12 = 6 + #N # e = # P
6 = #N