Question

Least ionic compound?
a AgCl
b KCl
c BaCl2
d CaCl2

how to determine this?

Answer 1

d) CaCl2

For the maximum ionic characteristics, there are some conditions

(i) low charge

(ii) large size of cation ans small size of anion

Answer 2

Answer: D) CaCl2

remeber these statements :->

FOR LEAST IONIC CHARACTER YOU MUST HAVE

1) SMALLEST SIZE OF THE CATION.

2) LARGEST SIZE OF THE ANION.

3)LARGEST CHARGE ON THE COMPOUND.

4) PSEUDO INERT GAS TYPE ELECTRONIC

CONFIGERATION (i-e 18 electrons in the

outermost shell eg- Cu).

SO, ACCORDING TO THE GIVEN QUESTION,

OUT OF THE FOUR ,AgCl and BaCl has least charges so, they are rejected at all...

SO, NOW WE HAVE TO CHOOSE AMONG BaCl2 or CaCl2 .

Now , according to the first rule mentioned above , ie for least ionic character the cation size should be as small as possible.

SO , AS WE KNOW OUT OF Ca and Ba , Ca is smaller in size ( REMEBER SIZE OF AN ATOM INCREASES WHEN WE MOVE DOWN THE GROUP).

so, the correct option should be option D)CaCl2

I KNOW IN MOST OF THE BOOKS THE ANSWER IS OPTION A)AgCl . BUT THAT IS APPROVED WRONG BY MOST OF THE IITANS AND PROFESSORS . SO, THE CORRECT AND THE FINAL ANSWER IS D)

HOPE YOU UNDERSTAND , MARK THIS AS THE BRAINLIEST PLEASE