00:01
For this question, we are looking for what is the percent natural abundance of isotopes? so the first thing you have to know is an isotope is when we have atoms of the same element, so if it's the same element, we have to have the same number of protons.
00:22
But if it's an isotope, it's going to have a different number of neutrons, which means it's going to have a different mass.
00:34
So if we look at hydrogen, the two naturally occurring isotopes of hydrogen are hydrogen 1 and hydrogen 2.
00:45
So both of them have to have one proton because they are isotopes.
00:53
And if they're isotopes, they have to be of the same element and they have to have the same number of protons.
01:00
So if i look at the fact that they're isotopes, the different masses comes from a different number of neutrons.
01:08
So hydrogen 1 has zero neutrons, while hydrogen 2 has one neutron...