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Chemistry 21 Online
OpenStudy (darkbluechocobo):

Can anyone assist me with my Chemistry Lab?? I really need help please!

OpenStudy (darkbluechocobo):

OpenStudy (joannablackwelder):

Is the O2 molecule given as an example and you filled in for F2?

OpenStudy (darkbluechocobo):

Yes O2 was example And I filled it in for Fluorine

OpenStudy (darkbluechocobo):

So are you supposed to combine 2 fluorine?

OpenStudy (joannablackwelder):

Yeah, fluorine is diatomic.

OpenStudy (joannablackwelder):

Atoms that exist as diatomic molecules are Br2, I2, N2, Cl2, H2, O2, and F2.

OpenStudy (darkbluechocobo):

So how would you find out he Number of electrons in the bond and around the nucleus

OpenStudy (joannablackwelder):

The total must add up to 8 valence electrons for each atom, except Hydrogen (which will have 2).

OpenStudy (joannablackwelder):

For example, since Oxygen has 6 valence electrons on its own, it must make a double bond (share 4 electrons) for each atom to come out with 8.

OpenStudy (joannablackwelder):

Drawing Lewis diagrams is helpful.

OpenStudy (darkbluechocobo):

So since Fluorine only has 7 it needs one more so it take one away from the other fluorine making it 6 in the bond and 2 around the nucleus? and I have not seen one of those before o.o

OpenStudy (joannablackwelder):

No, the ones in the bond are shared. So, 2 in the bond and 6 around the nucleus.

OpenStudy (darkbluechocobo):

o_o So they add on to the nucleus and take away from the bond?

OpenStudy (joannablackwelder):

No, each fluorine is sharing one electron with the other, to create the bond.

OpenStudy (joannablackwelder):

I wish I could draw it, but my iPad wont let me.

OpenStudy (darkbluechocobo):

Oh, So with Chlorine, This also has 7 valence electrons so would it be 2,6 again?

OpenStudy (joannablackwelder):

Yes, great!

OpenStudy (darkbluechocobo):

O: Yay

OpenStudy (joannablackwelder):

:D

OpenStudy (darkbluechocobo):

SO with hydrogen it has 1, Would it be 1,7?

OpenStudy (joannablackwelder):

No, Hydrogen is special. It only needs 2 to make a full valence shell.

OpenStudy (joannablackwelder):

But you can't make a bond with only 1 electron anyway.

OpenStudy (darkbluechocobo):

So It doesn't need 8 valence electrons?

OpenStudy (joannablackwelder):

Right. Just 2.

OpenStudy (darkbluechocobo):

so would it be 1 and 1 then?

OpenStudy (joannablackwelder):

Each would share 1 making 2 in the bond and none left around the nucleus.

OpenStudy (darkbluechocobo):

o-o Goodness *facepalm* I am sorry Chemistry is just not my subject v.v

OpenStudy (joannablackwelder):

It is easier to see when you draw it. H. and .H combine to make H:H

OpenStudy (darkbluechocobo):

With a Lewis diagram is it like the rings around the nucleus or is that Boers?

OpenStudy (joannablackwelder):

A Lewis diagram is dots around the atom, representing electrons.

OpenStudy (joannablackwelder):

I think you are referring to Bohr's model, and that is completely different.

OpenStudy (darkbluechocobo):

Ohhhh

OpenStudy (darkbluechocobo):

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