iGCSE Topic 2a Group 1 MCT DOUBLE REVISION

Which alkali metal has the electron configuration 2.1

• Sodium

• Potassium

• Lithium

Which alkali metal has the electron configuration 2.8.8.1

• Sodium

• Potassium

• Lithium

Which alkali metal has the electron configuration 2.8.1

• Sodium

• Potassium

• Lithium

Which alkali metal is most reactive out of the following

• potassium

• sodium

• lithium

How many electrons do the alkali metals have in their outer shell?

• 1

• 2

• 8

• 7

Tags

NGSS.HS-PS1-1

What happens to the reactivity of the alkali metals as you move down the group?

• increases

• decreases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the name of the product formed when lithium reacts with chlorine?

• Lithium chloride

• Lithium chlorine

• Lithium chlorate

• Lithium oxide

What is the formula of a group 1 metal hydroxide?

• MOH

• M₂OH

• M(OH)₂

• MO

Answer explanation

Group one ions have an M⁺ charge

A hydroxide ion is OH^-

The ions are in a 1:1 ratio to cancel charge

MOH

Which alkali metal reacts with water to produce a lilac flame?

• K

• Na

• Li

• DuNo

What happens to the melting point of the alkali metals as you move down the group?

• decreases

• increases