How group 3A-7A differ from other group A elements?

Answer 1

Group 2A elements form compounds that are less soluble in water.

Group 2A elements are harder.

Group 2A elements have an additional valence electron.

Group 2A elements are less reactive.

Answer 2

Group 3A-7A elements are transition metals, meaning they have partially filled d-subshells in their electron configurations, while other group A elements do not. Transition metals generally exhibit a wide range of oxidation states and form colorful compounds due to d-d transitions, whereas other group A elements do not show this behavior. Additionally, transition metals often display catalytic properties, while other group A elements typically do not.

Answer 3

base in my experience.... because of the gravity of the earth...

Answer 4

because it concern the Periodic Table.

Answer 5

There selected oxidation states.