Question

what changes observed across a period and down a group in the following (a)electron affinity (b)Ionization energy what is the unit of each?​

Answer 1

HEY

a) Electron affinity

Across the period -Increases

Down the group- Decreases

b)Ionization Energy

Across the period - Decreases

Down the group- Increases

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Answer 2

Explanation:

electron affinity decreases down the group and increases from left to right in period

ionization energy decreases down the group

and increases from left to right