Chemical Properties of Group 1 Elements

IMPORTANT

Chemical Properties of Group 1 Elements: Overview

This topic covers concepts, such as Oxidation States of Alkali Metals, Standard Reduction Potentials of Alkali Metals, Chemical Properties of Alkali Metals, Reaction of Air with Alkali Metals, Formation of Oxides of Alkali Metals, etc.

Important Questions on Chemical Properties of Group 1 Elements

EASY
IMPORTANT

  K O 2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it.

EASY
IMPORTANT

When Na and Li placed in dry air we get :-

EASY
IMPORTANT

On allowing ammonia solution of s-block metals to stand for a long time, blue colour becomes fade. The reason is:-

EASY
IMPORTANT

Which of the following statement is/are false for alkali metals?

EASY
IMPORTANT

What happens when alkali metals react with compound containing acidic hydrogen?

MEDIUM
IMPORTANT

Which hydride of alkali metals behave as strong reducing agents ?

EASY
IMPORTANT

Which of the following elements shows in the decreases of the stability of hydrides.

MEDIUM
IMPORTANT

Assertion (A): LiCl and MgCl2 are soluble in ethanol
Reason (R) : Lithium and magnesium are harder than their respective group elements

The correct option among the following is

EASY
IMPORTANT

The oxidation number of K in KO2 is

EASY
IMPORTANT

What happened when sodium is treated with ethyl alcohol.

MEDIUM
IMPORTANT

What happened when alkali metals are reacted with proton donors or acidic hydrogen?

EASY
IMPORTANT

The correct statements are
(I) The low solubility of LiF is due to its high lattice enthalphy
(II) LiBrL is not soluble in acetone
(III) LiCl is soluble in pyridime
(IV) The order of melting points of alkali metal lalides is MF>MCl>MBr>MI

EASY
IMPORTANT

Which one of the following liberates oxygen on reacting with H2O?

EASY
IMPORTANT

The correct order of stability of the following superoxides is

MEDIUM
IMPORTANT

Potassium superoxides finds use in breathing equipment and safeguards the users to breath in oxygen generated internally in the apparatus without being exposed to toxic fumes out side. The supply of oxygen is due to :
i) Slow decomposition of KO2
ii) Reaction of superoxide with moisture in the exhaled air.
iii) The reaction of KO2 with CO2 in the exhaled air.

EASY
IMPORTANT

The oxide of potassium that does not exist is

EASY
IMPORTANT

Which factor makes Li the strongest reducing agent in aqueous solution?

HARD
IMPORTANT

The reason due to which alkali metals react with proton donors such as gaseous ammonia, water, alcohol, etc., is?

HARD
IMPORTANT

Which gas will be released when alkali metals react with proton donors such as water, gaseous ammonia, etc?

EASY
IMPORTANT

Which of the following statements is not true about the solvated ions formed when sodium dissolves in liquid ammonia at low temperature ?