00:01
So starting with our nuclear symbols here, we've got e, a, and z.
00:06
E here would represent the element symbol.
00:13
Z would be the atomic number.
00:19
A would be the mass number.
00:26
So for a here, we've got 30, 14, r.
00:31
So this would have 14 protons.
00:34
30 minus 14, so 16 neutrons when we subtract the 2.
00:41
And it's neutral, so this would be 14 electrons.
00:45
And atomic number 14, this would be the element silicon.
00:54
For b, symbol is 89, 39, t...