00:01
Okay, so we're given that the mass number of an isotope is more than twice the atomic number.
00:08
So that is, it's rated as mass number, is more than, so that's greater than twice the atomic number.
00:21
Okay, so we know that, oh, actually, before i go on with that, we're asked to find the neutron to proton ratio.
00:30
So we need to use our definitions of mass number and atomic number to rewrite them in the, terms of neutrons and protons.
00:39
So we have mass number.
00:40
That's our protons plus neutrons.
00:43
So i'm going to do mass number is equal to protons plus neutrons.
00:53
And that's greater than two times our atomic number, which is our number of protons.
00:58
Okay...