Group 2 Elements

Group 2 elements also known as ....

• Alkaline

• Alkaline Earth

• Noble Gases

• Halogen

In which number alkaline earth metals are placed ....

• 1

• 5

• 7

• 2

Among all of these elements, which is not part of group 2 element?

• Magnesium

• Calcium

• Potassium

• Barium

The number of valence electron for alkaline elements group is ...

• 4

• 3

• 2

• 1

The atomic radii of group 2 elements is .... down the group generally.

• increased

• decreased

• irregular

• the same

The data beside show you the melting point of group 2 elements. The reason magnesium has lower melting point than calcium is ....

• the atomic radii of calcium is bigger than magnesium

• magnesium has weaker bond between its atoms, therefore it's closely packed, hence it needs less energy to break the bond

• magnesium has stronger bond between its atoms, it's loosely packed, hence it needs less energy to break the bond

• magnesium atomic mass is much lighter than calcium

The density of group 2 elements is .... down the group

• decreased

• increased

• irregular

• the same

Both first and second ionisation energy of group 2 elements is decreased down the group. It explains that ....

• It's easier to remove electrons at its outer shell ; down the group

• It needs more energy to remove electrons at its outer shell; down the group

• It's harder to gain electrons at its outer shell; down the group

• It needs the same energy for all elements

Group 2 elements will form .... ions when it releases electrons.

• +1

• -1

• +2

• -2

Which is the correct statements of group 2 ?

• The atomic radii is getting smaller down the group

• The density decreases down the group

• The ionisation energy increases down the group

• The group 2 metals getting more reactive down the group