AXE formula

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Ami_Pant_4G
Posts: 106
Joined: Sat Aug 24, 2019 12:17 am

AXE formula

Postby Ami_Pant_4G » Mon Nov 18, 2019 5:52 pm

What does the A in the AXE formula for molecular shape mean and can it ever have subscripts? Thanks in advance :)

DMuth_1J
Posts: 63
Joined: Thu Jul 11, 2019 12:15 am

Re: AXE formula

Postby DMuth_1J » Mon Nov 18, 2019 5:53 pm

It will not have a subscript. It is the central atom.

kim 2I
Posts: 105
Joined: Thu Jul 25, 2019 12:17 am

Re: AXE formula

Postby kim 2I » Mon Nov 18, 2019 6:16 pm

A is the central atom. I'm pretty sure it can't have subscripts since there can only be one central atom when we're talking about molecular shape.

Mandeep Garcha 2H
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Re: AXE formula

Postby Mandeep Garcha 2H » Mon Nov 18, 2019 9:00 pm

A is the central atom, X is the attached atoms, and E is the lone pairs.

Pablo 1K
Posts: 118
Joined: Sat Feb 02, 2019 12:15 am

Re: AXE formula

Postby Pablo 1K » Mon Nov 18, 2019 9:28 pm

A is the middle atom and will never have a subscript. Only E (lone pairs of the central atom) and X (bound atoms) can have subscripts.

Amir Bayat
Posts: 115
Joined: Sat Sep 07, 2019 12:16 am

Re: AXE formula

Postby Amir Bayat » Mon Nov 18, 2019 9:33 pm

Being the central atom, A, does not have subscripts. We look at the shapes of molecules using the central atom and the atoms that it is bonded to. No shape will have an A with a subscript.

Amy Xiao 1I
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

Re: AXE formula

Postby Amy Xiao 1I » Mon Nov 18, 2019 10:57 pm

If there is no central atom, there would simply be no A in the formula. For example, in I3-, the formula is X2E3 because there is no central atom. (This is problem 2E13A)

Leila_4G
Posts: 114
Joined: Sat Sep 14, 2019 12:17 am

Re: AXE formula

Postby Leila_4G » Mon Nov 18, 2019 11:44 pm

Hi! What's the shape of the AX2E VSEPR formula? I think it is bent or trigonal planar, but I'm not sure.

sarahwu3a
Posts: 50
Joined: Sat Aug 17, 2019 12:17 am

Re: AXE formula

Postby sarahwu3a » Mon Nov 18, 2019 11:58 pm

AX2E is bent shaped.

Avnita C_4B
Posts: 50
Joined: Sat Sep 14, 2019 12:17 am

Re: AXE formula

Postby Avnita C_4B » Tue Nov 19, 2019 12:13 am

A is the central atom and AX2E is considered as bent shape.


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