Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) JEE Main 2023 - S Block Single Correct MCQ
Published on: August 13, 2026

Identify the correct statements about alkali metals.

A. The order of standard reduction potential (M + |M) for alkali metal ions is Na > Rb > Li.

B. CsI is highly soluble in water.

C. Lithium carbonate is highly stable to heat.

D. Potassium dissolved in concentrated liquid ammonia is blue in colour and paramagnetic.

E. All the alkali metal hydrides are ionic solids. Choose the correct answer from the options given below

A
A, B, D only
B
C and E only
C
A and E only
D
A, B and E only

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Text Solution

Verified by Experts
The correct answer is:
C

Na > Cs > Li - true {If considered with sign}

The low solubility of CsI is due to smaller hydration enthalpy of it's two ions

Li 2 CO 3 is highly stable to heat - false

In Cone. NH 3 , K formed blue solution - true

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