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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which one of the following statements is incorrect in relation to ionisation enthalpy ?
  • A
    Ionization enthalpy increases for each successive electron
  • B
    The greatest increase in ionization enthalpy is experienced on removal of electron from core of noble gas configuration
  • C
    Determination of valence electrons is marked by a large jump in ionization enthalpy
  • ✓
    Removal of electron from orbitals bearing lower $n$ value is easier than from orbital having higher $n$ value.
✓

Answer

Correct option: D.
Removal of electron from orbitals bearing lower $n$ value is easier than from orbital having higher $n$ value.
d
Orbitals bearing lower value of $n$ will be more closer to the nucleus and thus electrons will experience greater attraction from nucleus and so its removal will be difficult not easier.

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