00:01
In this problem, we are given the binding energy of a specific metal, and we need to find the threshold frequency of the same metal.
00:11
So the binding energy is telling us how strong our molecules or electrons are bonded or behaving in the metal.
00:20
So this is actually a great way for us to understand the strength of bonds in various types of substances.
00:27
Where given the binding energy is 193 jule, pardon me, 193 kilojoules per mole.
00:35
The frequency is given by the equation phi over h, where v is our frequency.
00:43
Phi is our binding energy and h is clanks constant.
00:47
The only thing in that we need to do in this case is convert our binding energy from kilojoules per mole to joules per electron.
00:55
So phi is going to be equal to 190.
00:58
93 kilojoules per every one mole of electrons.
01:02
And we know that there are 10 to the third joules in every one kilojoule...