Q.
Correct order of 1st ionisation potential (IP) among following elements Be,B,C,N,O is
3131
211
AIPMTAIPMT 2001Classification of Elements and Periodicity in Properties
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Solution:
The 1st Ionisation Potential increases across a period as atomic size decreases. Given elements are Be,B,C,N,O.
1st Ionisation Potential order is B<Be<C<O<N.