Which of the following is not true in regard to atomic radii of main group elements?
A. Atomic radii generally increase as you move down a group.
B. Atomic radii size is related to the number of electrons in the valence level and the number of protons in the nucleus.
C. Atomic radii generally increase as you move from left to right across a period.
D. Atomic radii decrease in size when the pull of electrons toward the nucleus of an atom is greater.

Question

Which of the following is not true in regard to atomic radii of main group elements? 
A.  Atomic radii generally increase as you move down a group. 
B.  Atomic radii size is related to the number of electrons in the valence level and the number of protons in the nucleus. 
C.  Atomic radii generally increase as you move from left to right across a period. 
D.  Atomic radii decrease in size when the pull of electrons toward the nucleus of an atom is greater.

jfraser · Answer

check each option one at a time and decide if it's true or not. only one won't fit

anonymous · Answer

It can't be D or B correct?

anonymous · Answer

Would it be A?

jfraser · Answer

it's not D or B, they are each true

anonymous · Answer

That's what I thought, so would the correct answer be A?

jfraser · Answer

atomic radii DO generally increase down a group. It's not A

anonymous · Answer

Crap, so its C. Darn it.