00:01
When drawing the electron configuration, it's helpful to have what this textbook calls the filling diagram.
00:08
As shown here, we fill along these diagonals.
00:13
1s, then 2s, then 2p3s, and so forth.
00:18
Each of these corresponds to the number of electrons that exist along those diagonals.
00:24
Boron has 5 electrons, so we'll go 1s, 2, 2s, 2, 2 2 electrons.
00:31
Can exist in the s sub -levels.
00:34
And then 2p, we only need one more to get our 5, so 2p1.
00:42
Argon has 18 electrons, so 1s2, 2 .2, 2p 6, 3s2, and then we go to 3p 6...