Question

What is the effect of (1) size of atom (ii) penetration effect on ionisation enthalpy?​

Answer 1

Answer:

As a result ,outer electrons are held less firmly and hence lesser amount of energy is required to knock them out. Ionisation enthalpy decreases with increase in atomic size. If the penetration effect of the electron is more, it will be closer to the nucleus and hence will be held more firmly by the nucleus .

Explanation:

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Answer 2

Explanation:

Ionisation enthalpy decreases with increase in atomic size. If the penetration effect of the electron is more, it will be closer to the nucleus and hence will be held more firmly by the nucleus . Consequently the ionization enthalpy will be high.