Uploaded by gayglennp on 16.10.2008

Transcript:

Hello

So if you want to learn the electron configuration of

an element you must first know groups of the

Periodic Table. The S, D, P, and F. F we aren’t going

to talk about in this video because it is a little to

complicated. So lets say we are trying to find the

electron configuration of Oxygen right here. We

start with the top left and work our way down as if

we are reading. So we start here in the s group and the

first row. So we say 1s it’s the first row and all in the

s group so 2 because there are 2 electrons. So right

here we are saying in the first row, it’s in the s block

and there are 2 electrons. Then we go down a row so

now it’s row 2 and there is again 2 electrons in the s

group so we say s2. Then we go over here, now we

are in the p group but still in the 2nd row, so we still

have a 2 but bow we have a p because we are in the p

group and we count the number of electrons to

Oxygen so 1, 2, 3, 4. So the electron configuration

for Oxygen is 1s2 2s2 2p4. Now if you want to find

Chlorine you would do the same process. You would

start wit… up here 1s2, again that is saying 1st row,

s block 2 electrons. 2s2, 2nd row s block 2 electrons

2p because now we are over here. 2nd row p section

and this is all full so that’s 1, 2, 3, 4, 5, 6. So it’s

always, no mater where in the p block, the maximum

that you can have is 6. You can have less than 6 but no

more. And S group you can only have 2 or less.

And same for D and so on and so forth. So now we

are done with the 2nd row. 3rd row we start with a 3,

we are in the s block so we write an s and there are 2

electrons so 2. An again we jump over here now

we are in the 3rd row p block 1, 2, 3, 4, 5 electrons.

So this is kind of long and chemists as any scientist

are fairly lazy so they don’t like to write this out all the

time so they have another way of writing this. And so

if we are at Chlorine here we look at… so these are

the noble gases. You look at the next noble gas in

this case it’s neon, so they say neon base and then

they start from there. So they are basically taking

all of this and putting it into there. So this is saying

that is saying this and that is saying this. So from

there you would go 3rd row, s block, 2 electrons.

3rd row, p block, 5 electrons. So these are exactly the

same just written a little differently. You would

read this as neon base 3s2 3p5 and that is a lot easier

than reading that all out.

CC by Glenn

So if you want to learn the electron configuration of

an element you must first know groups of the

Periodic Table. The S, D, P, and F. F we aren’t going

to talk about in this video because it is a little to

complicated. So lets say we are trying to find the

electron configuration of Oxygen right here. We

start with the top left and work our way down as if

we are reading. So we start here in the s group and the

first row. So we say 1s it’s the first row and all in the

s group so 2 because there are 2 electrons. So right

here we are saying in the first row, it’s in the s block

and there are 2 electrons. Then we go down a row so

now it’s row 2 and there is again 2 electrons in the s

group so we say s2. Then we go over here, now we

are in the p group but still in the 2nd row, so we still

have a 2 but bow we have a p because we are in the p

group and we count the number of electrons to

Oxygen so 1, 2, 3, 4. So the electron configuration

for Oxygen is 1s2 2s2 2p4. Now if you want to find

Chlorine you would do the same process. You would

start wit… up here 1s2, again that is saying 1st row,

s block 2 electrons. 2s2, 2nd row s block 2 electrons

2p because now we are over here. 2nd row p section

and this is all full so that’s 1, 2, 3, 4, 5, 6. So it’s

always, no mater where in the p block, the maximum

that you can have is 6. You can have less than 6 but no

more. And S group you can only have 2 or less.

And same for D and so on and so forth. So now we

are done with the 2nd row. 3rd row we start with a 3,

we are in the s block so we write an s and there are 2

electrons so 2. An again we jump over here now

we are in the 3rd row p block 1, 2, 3, 4, 5 electrons.

So this is kind of long and chemists as any scientist

are fairly lazy so they don’t like to write this out all the

time so they have another way of writing this. And so

if we are at Chlorine here we look at… so these are

the noble gases. You look at the next noble gas in

this case it’s neon, so they say neon base and then

they start from there. So they are basically taking

all of this and putting it into there. So this is saying

that is saying this and that is saying this. So from

there you would go 3rd row, s block, 2 electrons.

3rd row, p block, 5 electrons. So these are exactly the

same just written a little differently. You would

read this as neon base 3s2 3p5 and that is a lot easier

than reading that all out.

CC by Glenn