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First Ionization Enthalpy of Two Elements X and Y Are 500 Kj Mol-1 and 375 Kj Mol-1 Respectively. Comment About Their Relative Position in a Group as Well as in a Period. - Chemistry

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ConceptPeriodic Properties and Variations of Properties:- Physical and Chemical

Question

First ionization enthalpy of two elements X and Y are 500 KJ  mol-1 and 375 KJ mol-1 respectively. Comment about their relative position in a group as well as in a period. 

Solution

The ionization energy is the minimum energy required to remove the outermost electron from a gaseous neutral atom to form a cation.

Position in a group: X will be above Y ( because of ionization energy decreases down the group )

Position in a period: X will be the right side of Y ( because ionization energy increases from left to right)

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 Selina Solution for Selina ICSE Concise Chemistry for Class 10 (2017 to Current)
Chapter 1: Periodic Table, Periodic Properties and Variations of Properties
Exercise - 1 | Q: 4 | Page no. 18
Solution First Ionization Enthalpy of Two Elements X and Y Are 500 Kj Mol-1 and 375 Kj Mol-1 Respectively. Comment About Their Relative Position in a Group as Well as in a Period. Concept: Periodic Properties and Variations of Properties:- Physical and Chemical.
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