Why is (CH3)2Be is sp?  [ENDORSED]


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Chem_Mod
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Why is (CH3)2Be is sp?

Postby Chem_Mod » Wed Sep 14, 2011 8:36 am

Question: Can you please explain to me why (CH3)2Be has a hybridization of sp rather than sp3? Is it because Be has an empty p orbital and lone pairs do not effect it?

Chem_Mod
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Re: Why is (CH3)2Be is sp?

Postby Chem_Mod » Wed Sep 14, 2011 8:36 am

Answer: Be is in group 2 and forms two bonds, one to each CH3. Placing Be in the center forms a linear molecule with two single bonds.Therefore Be is sp hybridization.
Attachments
(CH3)2Be Hybridization.png

Dang Lam
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Re: Why is (CH3)2Be is sp?

Postby Dang Lam » Sat Nov 18, 2017 7:49 pm

Can you please explain why we can put Be in the middle? thanks

Cynthia Tsang
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Re: Why is (CH3)2Be is sp?

Postby Cynthia Tsang » Sat Nov 18, 2017 9:04 pm

The central atom is always the one with the lowest electronegativity. Be is lower than C so it is in between the two carbons

Evelyn L 1H
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Re: Why is (CH3)2Be is sp?

Postby Evelyn L 1H » Wed Nov 22, 2017 12:33 pm

On number 4.19, it says that (CH3)2BE is tetrahedral - how is that right if it's VSEPR is sp?

Chem_Mod
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Re: Why is (CH3)2Be is sp?  [ENDORSED]

Postby Chem_Mod » Wed Nov 22, 2017 12:55 pm

Please read things carefully.

The solution manual says the shape is a tetrahedral about the carbon atoms.

However, as a whole, the molecule is linear. Meaning with respect to the central Be atom in (CH3)2Be.

Destiny Diaz 4D
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Re: Why is (CH3)2Be is sp?

Postby Destiny Diaz 4D » Tue Nov 20, 2018 7:31 pm

Chem_Mod wrote:Please read things carefully.

The solution manual says the shape is a tetrahedral about the carbon atoms.

However, as a whole, the molecule is linear. Meaning with respect to the central Be atom in (CH3)2Be.


So to better understand, if the question were to ask of the shape in respect to the carbon atoms then the shape would be tetrahedral and if in respect to Be then the shape would be linear? Since the question doesnt specify would you just assume Be and just specify in the answer what your bond angle is refering to ?

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Re: Why is (CH3)2Be is sp?

Postby Chem_Mod » Sat Nov 24, 2018 11:19 pm

Your statement is correct. You can also ask for clarification if it appears on the exam


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