00:01
Hello everyone, so we have to tell valence electron of each atom.
00:04
So valence electron is an electron present in outer shell.
00:18
It is valence electron.
00:21
Now the first is barium.
00:24
So for barium, atomic number is 56.
00:28
So electronic configuration would be so the valence electron of ba is 2.
01:12
So 2 is the valence electron.
01:14
Now the next is ne.
01:22
That is neon.
01:24
And neon have atomic number 10.
01:27
So the configuration would be so configuration is 2 into 2 8.
01:36
So it has complete shell.
01:40
So valence electron is 0.
01:47
Ne is present in valence electron is 8.
01:55
Ne is present in 0 group...