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QJEEM22Chc2f2: JEE Main 2022 Chemistry - Class 11 JEEM22Chc2f2 Solution: The incorrect statement is

The incorrect statement is

Multiple Choice Options

  • A The first ionization enthalpy of K is less than that of Na and Li.
  • B Xe does not have the lowest first ionization enthalpy in its group.
  • C The first ionization enthalpy of element with atomic number 37 is lower than that of the element with atomic number 38.
  • D The first ionization enthalpy of Ga is higher than that of the d-block element with atomic number 30.

Step-by-Step Verified Solution

On moving down in a group ionisation energy decrease

∴1st \therefore 1^{\text {st }} ionisation enthalpy order is \mathrm{Li}>\mathrm{Na}>\mathrm{K}

Zn\mathrm{Zn} has more ionisation energy as compared to Ga because of their pseudo inert gas configuration.

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