00:01
Here we are completing a table again, so we have the element name.
00:04
So we have potassium, vanadium, cadmium and barium.
00:21
And we're looking at the symbol, the number of protons are positively charged subatomic particles, the number of electrons, the negatively charged some atomic particles, and then the neutrons, they're neutral.
00:35
So with potassium, with the first example, the symbol is just k.
00:40
And so the proton number here is 19.
00:44
The electron number is also 19, and the neutron number is 41 takeaway 19, which is 19...