Dave's ESL Cafe's Student Discussion Forums

Chemgirl01 · Joined: 25 Jun 2005 Posts: 2

Does anyone know the answers to these, I am having trouble:

9. Calculate the bond length (in picometers) of a chemical bond between bromine & strontium.

a. 3.05 b. 305 c. 256 d. 314

10. Calculate the % ionic, % covalent, & bond length of a chemical bond between phosphorous & oxygen.

a. 34% ionic, 66% covalent, 338 pm
b. 66% ionic, 34% covalent, 338 pm
c. 34% ionic, 66% covalent, 179 pm
d. 66% ionic, 34% covalent, 179 pm

Dinah · Joined: 21 May 2005 Posts: 52 Location: China

If your question write in Chinese ,I may help you.My English is poor.
We often do these exercise problems.
_________________
I like Jonathan Jackson~!
Tuck everlasting
If I am Winne I'll choose to drink from the spring.
I still remember Jesse said Winne Foster I love you untill I'm dead.Of course Jesse will never dead.