00:01
To start this question, we need to know what the variables a and z represent.
00:09
And a simply is, you can call it the mass number, nucleon number.
00:16
It tells us what are the total number of nucleons in the nucleus.
00:27
Whereas for zang, it tells us the number of protons that are.
00:35
In the nucleus.
00:42
And finally, x refers to the chemical or the element that we are interested in, right? the element that it represents.
00:55
So we are given 38 protons, so very simply zc must be 38.
01:02
And we are given 50 for neutrons, right? so neutrons we have 50.
01:08
I'll just put it as n.
01:10
So what is the total number of nucleons? that is very simple...