00:01
If we assume carbon to be the central atom and we have bonded to it one hydrogen, how many chlorines do we need for carbon to have an octet? well, we're going to need three chlorines.
00:13
So the chemical formula is going to be c -h -c -l -3.
00:18
If we have boron as a central atom, boron actually only needs six valence electrons surrounding it, it having three valence electrons to begin with, thus only able to form three bonds.
00:36
So we would have three fluorines surrounding the boron, and its formula would be bf3.
00:44
Then we have sulfur.
00:50
If we give it two hydrogens, then there's enough valence electrons to give sulfur two lone pairs, sulfur having six, hydrogen each having one, that gives us a total of eight.
01:03
So 2468.
01:06
Then the chemical formula is h2s.
01:11
And then for silicone, if we look at silicone, it's in the same group as carbon.
01:20
Carbon always having to have four bonds.
01:23
Silicon will also typically have four bonds.
01:28
So we're going to need four chlorines in order for us to get the correct chemical formula.
01:37
Thus it is sicl4.
01:41
Next it wants to know what noble gas electron configuration do the bromine atoms have in the molecule br2...