Group 2 metals

What is the E.C of Be?

• 1s² 2s² 2p¹

• 1s² 2s²

• 1s² 2s² 2p²

How does atomic radii vary going down the group?

• Increases

• Decreases

What is the oxidation number of the Group 2 metals?

• +1

• +2

• -1

How does first ionization energy change going down the group?

• Increases

• Decreases

Group 2 metals are too reactive to be found uncombined in nature.

• True

• False

Why do Group 2 metals have higher m.p than Group 1?

• Higher charge and more electrons

• Lower charge and less electrons

What are the TWO major factors influencing atomic radii?

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How does reactivity of the metals change going down the group?

• Increases

• Decreases

Which is the MOST soluble Group 2 sulfate?

• CaSO₄

• BaSO₄

• MgSO₄

A stable compound must have

• small cation, high charge

• large cation, small charge