Which of the following represents the correct order of increasing firs – InterviewSolution

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1.	Which of the following represents the correct order of increasing first ionisation enthalpy for Ca, Ba, S, Se and Ar ?
Answer» CA S Ba Se Ar S Se Ca Ba Ar Ba Ca Se S Ar Ca Ba S Se Ar Solution :In a group I.E. decreases and therfore`CagtBa`and `SgtSe` In a period I.E in general INCREASES from left to RIGHT and therefore. `ArgtS`and`SegtCa` Hence correct order is `BaltCaltSeltSltAr`

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