Question

Why is the electron affinity of magnesium positive?

Answer 1

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The higher an atom's tendency to accept an electron, the more positive the electron affinity value will be.

The general trend is that electron affinity increases from left to right in the Periodic Table. Be and Mg are the two Group 2 elements closest to the head of the red arrow.

Unlike most elements, they have Ea≤0

Answer 2

★ The higher an atom's tendency to accept an electron, the more positive the electron affinity value will be.

★ The general trend is that electron affinity increases from left to right in the Periodic Table. Be and Mg are the two Group 2 elements closest to the head of the red arrow.

★ Unlike most elements, they have Ea≤0

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