Which elements of group-$1$ and group-$2$ differ from the other elements of the same group?
(A) Lithium $(Li)$ and beryllium $(Be)$,the first elements of Group-$1$ and Group-$2$ respectively,exhibit properties that differ from those of the other members of their respective groups. This is due to their small size,high electronegativity,and high polarizing power. Lithium shows diagonal relationship similarities to magnesium $(Mg)$,and beryllium shows similarities to aluminium $(Al)$.
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Similar Questions
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 $H_2O$.
$(a)$ 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 $H_2O$.
$KO_2$ finds use in oxygen cylinders used for space and submarines. The fact$(s)$ related to such use of $KO_2$ is/are:
Medium
View SolutionWhat are the metal ions present in carnallite?
Lithium resembles magnesium in some of its properties. Mention two such properties and give reasons for this resemblance.
Medium
View SolutionThe correct order of hydration enthalpies of alkali metal ions is
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