Notation used in VSEPR

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Aayush Patel 3B
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Joined: Thu Jul 25, 2019 12:17 am

Notation used in VSEPR

Postby Aayush Patel 3B » Fri Nov 15, 2019 7:32 pm

Do we need to be able to use the notation when identifying the shapes of molecules? For example, NH3 --> AX3E.

005391550
Posts: 68
Joined: Thu Jul 25, 2019 12:15 am

Re: Notation used in VSEPR

Postby 005391550 » Fri Nov 15, 2019 7:33 pm

I don't think it's not completely necessary but it does help you categorize the different VSEPR shapes into number of bond electrons and lone electrons.

Maeve Miller 1A
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Joined: Fri Aug 09, 2019 12:16 am

Re: Notation used in VSEPR

Postby Maeve Miller 1A » Fri Nov 15, 2019 7:34 pm

Yes, since it was covered during lecture and is used in the book/homework, I'm assuming it is something we need to know.

CynthiaLy4F
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Joined: Sat Jul 20, 2019 12:16 am

Re: Notation used in VSEPR

Postby CynthiaLy4F » Fri Nov 15, 2019 7:42 pm

I think it would be very helpful to know it because it'll help determine the different molecular shapes of molecules.

Katherine Brenner 3H
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Re: Notation used in VSEPR

Postby Katherine Brenner 3H » Fri Nov 15, 2019 7:57 pm

Can someone explain how we get that formula?

Louise Lin 2B
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Joined: Sat Aug 17, 2019 12:15 am

Re: Notation used in VSEPR

Postby Louise Lin 2B » Fri Nov 15, 2019 8:05 pm

The formula is derived from A being the central atom, X being the atoms bonded to the central atom (with the subscript being the number of atoms bonded to the central atom), and E being the number of lone pairs the central atom has.

Kaitlyn Jang 1F
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Joined: Sat Aug 17, 2019 12:16 am

Re: Notation used in VSEPR

Postby Kaitlyn Jang 1F » Sat Nov 16, 2019 1:22 am

You should know it since it was talked about in lecture, but besides that it helps you identify the different shapes of molecules with lone pairs.

Rebekah Alfred 1J
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Re: Notation used in VSEPR

Postby Rebekah Alfred 1J » Sat Nov 16, 2019 10:34 am

Katherine Brenner 3H wrote:Can someone explain how we get that formula?

For example, NH3 will have a VSEPR formula of AX3E because it has three bonded atoms and one lone pair. CH3Cl will have a VSEPR formula of AX4 because it has four bonded atoms and no lone pairs.

Katherine Brenner 3H
Posts: 73
Joined: Wed Sep 18, 2019 12:18 am

Re: Notation used in VSEPR

Postby Katherine Brenner 3H » Fri Nov 22, 2019 4:09 pm

Rebekah Alfred 1L wrote:
Katherine Brenner 3H wrote:Can someone explain how we get that formula?

For example, NH3 will have a VSEPR formula of AX3E because it has three bonded atoms and one lone pair. CH3Cl will have a VSEPR formula of AX4 because it has four bonded atoms and no lone pairs.

Thanks!


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