S - Block Elements (Alkali Metals)

CsOH is

• Strongly acidic

• Strongly basic

• Weakly basic

• Weakly acidic

Alkali metals give a _________________when dissolved in liquid ammonia.

• Deep blue solution

• Colourless

• Red colour

• None of these

The basic strength of which hydroxide is maximum

• LiOH

• NaOH

• KOH

• Ca(OH)₂

Which of the following alkali metals has the least melting point?

• Rb

• Li

• K

• Cs

Which one of the alkali metals, forms only the normal oxide, K₂O on heating in air?

• Li

• Cs

• Rb

• Na

As compared to K, Na has

• higher ionization potential

• lower melting point

• lower electronegativity

• larger atomic radius

The tendency to lose their valance electron easily by alkali metals makes them

• strong reducing agent

• weak reducing agent

• strong oxidising agent

• weak oxidising agent

What are the products formed when Li₂CO₃ undergoes decomposition?

• Li₂O₂, CO

• Li₂O, CO₂

• Li₂O, CO

• Li₂O₂, CO₂

Among the alkali metals, the metal with the highest ionization potential is

• Cs

• Na

• Li

• K

Which of the following is the least basic?

• Li₂O

• K₂O

• Na₂O

• None of these