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.
Solution
Lithium has highest hydration enthalpy among
alkali metals due to its small size.
<br><br>LiCl is soluble in pyridine because LiCl have
more covalent character.
<br><br>Li does not form ethynide with ethyne.
<br><br>Both Li and Mg reacts slowly with H<sub>2</sub>O.
About this question
Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals
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