Question

1. Predict whether the energy required to remove an electron from magnesium and potassium would be more or less than that required to remove an electron from sodium. Explain your prediction in terms of the forces and interactions involved in this process. \
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Answer 1

In both cases less energy is required

But comparetively Mg require more energy than K

Let's see the electron configuration of Both

• [Mg]=1s²2s²2p⁶3s²=[Ne]3s²
• [K]=1s²2s²2p⁶3s²3p⁶4s¹=[Ar]4s¹

K has only one valence electron so very less ionization enthalpy so less energy required

Mg has 2 so more IE hence more energy required