F4 Chemistry (Bond polarity)

2011-08-25 11:36 pm

1.Define allotropes
2. Suggest and explain how you would differentiate two sample of black powder, one of buckminsterfullerene and the other of graphite by a physical method.
3.Explain why the F-P-F bond angle in a PF^(3) molecule is smaller than the Cl-P-Cl bond angle in a PCl ^(3) molecule.

THX a lot~~~~~~~~~~~~~~~~~~~~~~

更新1:

Yes ~~~

更新2:

Who are you????

回答 (3)

[匿名]

2011-08-26 6:16 am

✔ 最佳答案

1. Alltropes are different forms of a same element.

2. Buckminsterfullere cannot conduct electricity while graphite can conduct electricity

3. The electronegativity of F is greater than Cl. hence F-P bond is more polar than Cl-P bond. THe bond pair of electron is further away to P in F-P bond than Cl-P bond, Cl-P has a stronger bond pair-bond pair replusion.

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己式庚辛

2011-08-28 2:56 am

I'd suggest repulsion between large-sized chlorine atom.

2011-08-27 18:56:59 補充：
also, C60 actually can conduct electricity!

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2011-08-26 5:59 am

你係咪何中咖=.=?

2011-08-26 21:22:35 補充：
我知你邊個啦-.-

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