Important Critical Chemistry Questions?

[time_search]

Hi all,

I have critical question i need to know.

1- for ( CF4) the angle is less than 109.5, then why it is in the 4-pyramid equals to 109.5

2- how "Avogadro constant" was calculated?

3- could any one advise for scientific links in chemistry and science that i could read and post questions rather than edaboard which i like most.

thanks alot

 

[Mohammed_Verification]

Hi all,

I have critical question i need to know.

1- for ( CF4) the angle is less than 109.5, then why it is in the 4-pyramid equals to 109.5

2- how "Avogadro constant" was calculated?

3- could any one advise for scientific links in chemistry and science that i could read and post questions rather than edaboard which i like most.

thanks alot

Hi time_search, refer this link **broken link removed** to calculate the Avogadro constant.

Hope It May Be Helpful...