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Which of the following has the highest a...

Which of the following has the highest and lowest cogulating power? `(AI^(+3),Na^(+),Mg^(+2),Ba^(+2)`) ?

A

`Al^(+3) , Na^(+`

B

`Na^(+), Al^(+3)`

C

`Ba^(+2), Al^(+3)`

D

They have same flocculation value

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The correct Answer is:
B
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