Verified Solution • 2025–26 Session moderate

QJEEM20Ch461e: JEE Main 2020 Chemistry - Class 11 JEEM20Ch461e Solution: Among the statements (a)-(d) the correct ones are : (a) Lithium …

Among the statements (a)-(d) the correct ones are :

(a) Lithium has the highest hydration enthalpy among the alkali metals.

(b) Lithium chloride is insoluble in pyridine.

(c) Lithium cannot form ethynide upon its reaction with ethyne.

(d) Both lithium and magnesium react slowly with H2O.

Multiple Choice Options

  • A (b) and (c) only
  • B (a) and (d) only
  • C (a), (b) and (d) only
  • D (a), (c) and (d) only

Step-by-Step Verified Solution

Lithium has highest hydration enthalpy among alkali metals due to its small size.

LiCl is soluble in pyridine because LiCl have more covalent character.

Li does not form ethynide with ethyne.

Both Li and Mg reacts slowly with H2O.

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