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

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
An ionic bond $P^+ Q^-$ is most likely to be formed when
  • A
    the ionization energy of $P$ is high and the electron affinity of $Q$ is low
  • ✓
    the ionization energy of $P$ is low and the electron affinity of $Q$ is high
  • C
    the ionization energy of $P$ and the electron affinity of $Q$ is high
  • D
    the ionization energy of $P$ and the electron affinity of $Q$ is low
✓

Answer

Correct option: B.
the ionization energy of $P$ is low and the electron affinity of $Q$ is high
b
The ionization energy $(IE)$ is defined as the amount of energy required to remove the most loosely bound electron of an isolated gaseous atom to form a cation. Electron affinity of an atom or molecule is defined as the amount of energy released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion. When the ionization energy is low and electron affinity is high, more will be the tendency to form an ionic bond.

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