00:01
When using the nuclear symbol notation, x, a, z, this corresponds to the chemical symbol, x, which identifies the element.
00:19
This is what we call the mass number and is the sum of the protons and the neutrons.
00:26
This is the atomic number, which is just the number of protons.
00:30
So if we have n147, then it's going to have seven and if 14 is the sum of protons and if 14 is the sum of protons and neutrons, then 14 minus the protons, which gives us seven will be the number of neutrons.
00:53
Then if we have n .a.
00:57
2311, we're going to have 11 protons and 23 minus 11.
01:03
11 gives us 12 neutrons.
01:09
And then for the next one, we have rn 222, 82.
01:16
So we have 82 protons...