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View Full Version : What is the differences between electron group geomtry and molecular geomtry?


JAMALL
Nov 22, 2010, 05:02 PM
Please with more detail, I could not understand it and the exam is coming :(

DrBob1
Nov 22, 2010, 07:08 PM
This is addressed at great length in numerous sources -- look for the VSEPR theory. The difference between electron group and molecular geometry is that the electron pairs orient to attain their greatest separation. Their BONDING pairs determine the shape of the molecule -- only ATOMS contribute to the shape of the molecule. The nonbonding pairs are there, they are not part opf the molecule's shape. In other words any diatomic molecule must be linear: as Euclid pointed out, two points determine a line. Triatomic molecules are therefore either linear or bent. Etc.

JAMALL
Nov 29, 2010, 06:12 PM
Hello again,
Can I ask these questions:
Is the non electrolyte solution the same molecular solution?
And please is this information correct, it says" the types of solution are 1. non electrolyte and stronge electrolyte?
Thanks a lot

DrBob1
Nov 29, 2010, 08:28 PM
Yes, solutions of non electrolytes are molecular solutions -- examples: glucose (C8H12O6), ethyl alcohol (CH3CH2OH).
A solution of sodium chloride is a solution of a strong electrolyte: in solution, NaCl exists as Na+ and Cl- ions.

JAMALL
Dec 1, 2010, 03:27 PM
Thank you Dr.
Can I say in breife:
The bonding electrons around the atoms, determine the shape of the molecules?

JAMALL
Dec 1, 2010, 05:35 PM
I'm sorry, what does Neutralization reaction mean?

DrBob1
Dec 1, 2010, 09:35 PM
Start a new question - I nearly missed this.
Neutralization reactions combine an acid and a base until both have completely reacted with each other. When a strong acid reacts with a strong base, the resulting solution has a pH for 7 -- the solution is NEUTRAL.