Group 1 Alkaline Metals Physical Properties

What name is given to the elements in Group 1?

• The Halogens

• The Alkaline Earth Metals

• The Alkaline Metals

• The Nobel Gases

Which of the element does not belong to Group 1?

• Fransium

• Oganesson

• Magnesium

• Rubidium

All elements in Group 1 have ____ valance electron(s).

• 1

• 2

• 3

• 4

Going down the group, the atomic radius of Group 1 elements

• Increases

• Decreases

• Remains the same

Group 1 elements usually form a ______ ion.

• -1

• -2

• +1

• +2

Going down the group, the softness of the elements___

• increases

• decreases

• remains the same

Select the correct statement(s) that describe physical properties of Group 1 elements:

• Soft metals

• High density

• Floats on the surface of water

• Shiny silvery surface but tarnish quickly in the air

• Needs to be stored under paraffin oil

Going down Group 1, the melting point and boiling points ____

• increases

• decreases

• remains the same

Select the correct statement that explain the trend of melting point and boiling point going down Group 1 elements:

• Atomic radius increases causing the metallic bond between atoms become stronger; more energy is required to overcome the stronger forces of attraction

• Atomic radius increases causing the metallic bond between atoms become weaker; less energy is required to overcome the weaker forces of attraction

• Atomic radius decreases causing the metallic bond between atoms become stronger; more energy is required to overcome the stronger forces of attraction

• Atomic radius decreases causing the metallic bond between atoms become weaker; less energy is required to overcome the weaker forces of attraction

In general, the melting point and boiling points of Group 1 elements are

• high

• low

• not too high and not too low