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CBSE Class 10 Answered

Dear experts kindly help me out with this question with a proper solution.  Thank you.
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Asked by pratikshyadashrkl | 22 Apr, 2020, 08:55: PM
answered-by-expert Expert Answer
Ionization energy decreases with an increase in the atomic size, i.e., it decreases as one moves down a group.
 
Hence if atomic number of element of He-family is Z, then among the given options nearest Z-1 will have highest IP.
 
Considering the given options and IP trend, Z-1 will have the highest IP.
Answered by Ramandeep | 22 Apr, 2020, 11:26: PM

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