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28 Oct 2021

Given information

The pair of elements and .  

Step-by-step explanation

Step 1.

Ionization energy is the energy required to remove electrons from the outermost shell of an isolated gaseous atom.

In a periodic table across the period from left to right atomic size decreases hence it will be difficult to remove electrons thus ionization energy increases across a period from left to right. Ongoing down the group atomic size increases and ionization energy thus decreases.

 

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Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944

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