00:02
Hi there.
00:04
This question is about the octet rule.
00:08
And the octet rule says that elements would like to have a total of eight valence electrons in their highest shell.
00:27
Okay, so that was a little redundant because valence electrons means in the highest shell.
00:32
So the octet rule says that elements want eight valence electrons.
00:36
If they do not have eight valence electrons, they will lose or gain electrons to get eight.
00:43
Okay, so as we answer this, all of these are true or false, but bear with me because when they were printed, they were scrambled a little bit.
00:50
So i have portions of sentences in one place and other portions and another, but i think i have figured them all out.
00:57
Okay, so the first statement i'm working with is the one that says elements in group 2a of the periodic table.
01:04
2a is over here on the left side.
01:06
Everything in group 2a has two valence electrons of their own.
01:11
So the true false question says, everything, elements in group 2a of the periodic table will gain two electrons to form an octet.
01:21
Well, that is false.
01:26
They will not gain two electrons.
01:34
What they will do is they will lose two electrons, but we'll see that statement later.
01:38
So they will not gain two electrons.
01:41
Next one, atoms with eight valence electrons follow the octet rule.
01:46
That is true.
01:56
So eight valence electrons.
02:01
Equals octet rule.
02:07
Okay, the next statement, atoms gain or lose valence electrons to obtain an octet.
02:12
That is true.
02:18
Gain or lose, depending on what they are.
02:21
Metals will lose while non -metals will gain.
02:28
Okay, and i'm kind of summarizing these because, like i say, they might be a little bit out of order based upon the way they were printed here.
02:35
Okay, the next one says all of the elements in group 8a or 18 of the periodic table obey the octet rule.
02:44
So, this is 8a...