00:02
Hello everyone, let's write the total number of balance electrons and the electronic configuration of the elements given.
00:10
So the first is nitrogen, that is n.
00:14
The electronic configuration is 1s2, 2 s2, 2p3, okay? and the valency is 2 plus 3 that is equal to 5.
00:32
So the next element is potassium, okay? not, it is basically k plus.
00:40
So this will be 1s2, 2 s2, 2p6, 3s2, 3p6, 4s1, okay? and the valance electron will be 1.
00:59
Valence electron is 1.
01:03
The next is iodine.
01:05
So this will be 1 s 2 s 2 s 2 p 6 3 s 2 p 6 4 s 2 3d 3d 10 4 s 2 3d 10 sorry this will be 4 p 6 4p 6 5 s 2 4 d 10 and 5 d 10 and 5 p 5 5 5 5 5 5 5 5 5 5 5 5 5 5p 5p 5 so the valance electron will be 2 plus 5 that is 7 right valence electron will be 7 next element is next ion is s 2 minus so the electronic configuration will be 1 s 2 2 2 2 s 2 2 p 6 3 s 2 3p 4 okay and valency will be 2 plus 4 that is equals to 6 the next ion is next ion is almonium 3 plus almonium 3 plus so the configuration will be 1 s 2 2 s 2 2 p 6 3 s 2 3p 1 okay and the valency will be 2 plus 1 is equals to 3 last is copper, so cu, the electronic configuration is 1 s2, 2 s2, 3s2, 3s2, 3p6, 4s1 and 3d10, okay? and the valance electron will be 1.
03:16
Now we'll be writing the nobel gas configuration instead the number of valence electrons.
03:22
The first one is b .a.
03:25
Okay.
03:26
Barium...