The alkaline earth metal nitrate that does not crystallise with water molecules, is:

  • Option 1)

    Mg\left ( NO_{3} \right )_{2}

     

     

     

  • Option 2)

    Sr\left ( NO_{3} \right )_{2}

  • Option 3)

    Ca\left ( NO_{3} \right )_{2}

  • Option 4)

    Ba\left ( NO_{3} \right )_{2}

Answers (1)
A admin

Ba \left ( NO_{3} \right )_{2}\rightleftharpoons Ba^{2+}+2NO_{3}^{-}

Action of alkali metals with water and compounds containing acidic hydrogen -

Reacts readily forming hydroxides with the liberation of hydrogen

- wherein

2M+2H{_{2}}O\rightarrow 2MOH+H_{2}

 

 

Order of reactivity of alkali metal with water -

Increases on going down the group

- wherein

Due to increase in electropositivity

 

   

 

Nature of Nitrates of alkali metals -

Decomposed upon heating to nitrites and evolve O{_{2}}

- wherein

2NaNO{_{3}\overset{\Delta }{\rightarrow}2NaNO{_{2}}+O{_{2}}

As we knoe that :

Ba \left ( NO_{3} \right )_{2}\rightleftharpoons Ba^{2+}+2NO_{3}^{-}

Ba2+ ion has low poolarization power ,because smaller in size of center atom mire water molecules will crystallize hence Ba \left ( NO_{3} \right )_{2}\rightlefthar is answer due to its largest size of +ve ion


Option 1)

Mg\left ( NO_{3} \right )_{2}

 

 

 

Option 2)

Sr\left ( NO_{3} \right )_{2}

Option 3)

Ca\left ( NO_{3} \right )_{2}

Option 4)

Ba\left ( NO_{3} \right )_{2}

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