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Statement-1:NaCl and KCl are anhydrous b...

Statement-1:NaCl and KCl are anhydrous but `MgCl_(2)` and `CaCl_(2)` exists as `MgCl_(2).6H_(2)O` and `CaCl_(2).6H_(2)O` respectively.
Statement-2: Hydration energies of group-2 ions are greater than those of group-1 ions

A

Both Statement -1 and Statement-2 are true and Statement-2 is the correct explanation of Statement -1

B

Both Statement -1 and Statement-2 are true and Statement-2 is the not correct explanation of Statement -1

C

Statement-1 is true but Statement -2 is false

D

Statement-1 is false but Statement -2 is true

Text Solution

Verified by Experts

The correct Answer is:
A
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KCl.MgCl_2. 6H_2O is a

Anhydrous MgCl_(2) is obatined by heating hydrate salt, MgCl_(2).6H_(2)O .

MgCl_(2^.)XH_(2)O,CaCl_(2^.)YH_(2)O and BaCl_(2^.)ZH_(2)O The value of X,Y and Z are respectively.

Mg(OH)_(2)darr+2HCl to MgCl_(2)+2H_(2)O

MgCl_(2).6H_(2)O on heating gives anhydrous MgCl_(2) .

Halides of alkaline earth metals form hydrates such as MgCl_(2).6H_(2)O,CaCl_(2).6 H_(2)O,BaCl_(2).2H_(2)O and SrCl_(2).2H_(2)O . This shows that halides of group 2 elements :