Which factors influence the value of ionizati | vedclass

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(D) The ionization enthalpy depends on the following factors: $1$. Atomic size: As the atomic size increases,the distance between the nucleus and the

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(D) The ionization enthalpy depends on the following factors: $1$. Atomic size: As the atomic size increases,the distance between the nucleus and the valence electrons increases,leading to a decrease in ionization enthalpy. $2$. Nuclear charge: As the nuclear charge increases,the attraction between the nucleus and the valence electrons increases,leading to an increase in ionization enthalpy. $3$. Screening effect: Inner shell electrons shield the valence electrons from the nuclear charge,decreasing the effective nuclear charge and thus decreasing the ionization enthalpy. $4$. Electronic configuration: Atoms with stable configurations (like fully filled or half-filled subshells) have higher ionization enthalpies.

Which factors influence the value of ionization enthalpy?

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Assertion $(A)$: First ionisation enthalpy of oxygen is less than that of nitrogen.
Reason $(R)$: Atoms with half-filled or completely filled orbitals are less stable.
The correct option among the following is:

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