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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

`Ba lt Ca lt Se lt S lt Ar`

B

`Ca lt Ba lt S lt Se lt Ar`

C

`Ca lt S lt Ba lt Se lt Ar`

D

`S lt Se lt Ca lt Ba lt Ar`

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The correct Answer is:
A
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