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First and second ionisation enthalpies(i...

First and second ionisation enthalpies(in KJ/mol) of few elements are given below:

Which of the above elements will form halides with formula `MX_(2)`?

A

(i) and (ii)

B

(i) and (iii)

C

(ii)and(iii)

D

(i) and (iv)

Text Solution

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The correct Answer is:
C
(ii)is a reactive metal from second group,and (iii)is a reactive non-metal from `17^(th)` group.
For second group elements,the difference in successive IE is less.The compound formed will be `MX_(2)`
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NCERT FINGERTIPS ENGLISH-CLASSIFICATION OF ELEMENTS AND PERIODICITY -Periodic Trends In Properties Of Elements
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