Quiz on the s-Block Elements

Which group of elements are known as Alkali metals?

• Li, Be

• Rb, Cs

• Fr, Mg

• Na, K

What is a characteristic property of s-block elements related to their metallic nature?

• Covalent oxides

• Low tendency to form positive ions

• High electronegativity

• Increase in metallic character down the group

Which s-block element has the lowest electronegativity?

• Li

• Na

• K

• Rb

What is the general trend for the hydration enthalpies of s-block elements?

• Increase down the group

• Increase up the group

• Decrease down the group

• Remain constant across the group

Which s-block element has the highest melting point?

• Li

• Na

• K

• Rb

What is the main product when s-block elements react with water?

• Metal hydroxide

• Metal sulphate

• Metal oxide

• Metal chloride

Which s-block element is known for its characteristic flame color of apple green?

• Ca

• Sr

• Ba

• Mg

What is the main use of sodium hydroxide?

• Manufacture of glass

• Making rayon

• Water softening

• Neutralizing acids in waste water treatment

Which compound is used in the paper industry for its properties?

• Magnesium hydroxide

• Sodium carbonate

• Sodium hydroxide

• Calcium hydroxide

What is the general trend for the solubility of Group II hydroxides?

• Increase down the group

• Decrease down the group

• Increase up the group

• Remain constant across the group