Here is another one for you to be exposed to:
Q) Which of the following compounds has the largest number of lone pairs of electrons on the central atom?
A) CCl4
B) NH3
C) CO2
D) H2O
Share your thoughts with us.
PS: Leave us your suggested answers in the “Comments” section below.
Rgds
Sean
D.
if i’m not wrong, lone pair of electrons is the pair of electron that is not shared/bonded with other atoms. (in simple terms)
so, if we draw out the structure and examine the electrons,
A has no lone pair of electrons,
B only have one pair,
C do not have (cos C-0 is double bond),
and D has 2 pairs.
hence, D should be the answer.
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Hi Lijun,
Well Done!
You are absolutely spot on!
Cheers
Sean
SimpleChemConcepts
“Learning Experience with A Difference”
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i think ans is c because both oxygens have 2 lone pairs.if not plz describe
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sean Reply:
May 5th, 2010 at 11:48 pm
Hi Sadia,
Answer is D.
For C – if you draw out the dot-and-cross diagram of CO2, you will realised that the central atom is Carbon, NOT oxygen atoms.
Hope this helps. Think about it.
To Your Academic Success in Chemistry,
Sean Chua
Master Trainer & Author
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well……………..thanks lijun……………its a new thing for me……….as well a sadia…………..aint it sadia?
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ans;D.
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