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    I am currently stuck on question 5 of the photo. I was hoping someone could help. The answers C but i cant work out why. Thanks in advance.
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    (Original post by ayvaak)
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    I am currently stuck on question 5 of the photo. I was hoping someone could help. The answers C but i cant work out why. Thanks in advance.
    A is an alkali metal since there is a large jump in the second IE.
    B is in group 2 since there is a large jump in the third IE.
    D is a noble gas because there are no large jumps in IE as all electrons are in the same energy level.

    That leaves C.
 
 
 
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