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Which of the following represents the co...

Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?

A

S lt Se lt Ca lt Ba lt Ar

B

Ba lt Ca lt Se lt S lt Ar

C

Ca lt Ba lt S lt Se lt Ar

D

Ca lt S lt Ba lt Se lt Ar

Text Solution

Verified by Experts

The correct Answer is:
B
The ionisation energy increases along a period from left to right and decreases along the group order is Ba < Ca < Se < S < Ar
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