Question

How do the following properties change in a period and group?
[1]Atomic Radius
[2]Ionisation Energy
[3]Electronegativity
[4]Electropositivity​

Answer 1

Answer:

1.atomic radius........

Answer 2

Answer:

(1) atomic radius:

Across a period from left to right:

decreases.

Down the group:

Increases.

(2) ionisation energy:

Across a period from left to right:

Increases.

Down the group:

Decreases.

(3) electronegativity:

Across the period from left to right:

Increases.

Down the group:

Decreases.

(4) electropositivity:

Across a period from left to right:

Decreases

Down the group:

Increases.

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