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MHT CET202313 May 2023Evening ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Which from following is a CORRECT decreasing order of ionisation enthalpy for different elements?

Options

  1. AAr > Ne > S > Cl
  2. BNe > Ar > Cl > S
  3. CNe > S > Cl > Ar
  4. DCl > S > Ne > Ar

Correct answer

B. Ne > Ar > Cl > S

Step-by-step solution

The ionisation enthalpy decreases down the group due to increase in the atomic size. Therefore, ionisation enthalpy of Ne is more than that of Ar. Across a period ionisation enthalpy increases with increase of atomic number. Therefore, ionisation enthalpy of S , Cl and Ar is in the order: S Ar > Cl > S

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