Calgon used as water softner is...

Calgon used as water softner is

A

`Na_(2)[Na_(4)(PO_(3))_(6)]`

B

`Na_(4)[Na_(2)(PO_(3))_(6)]`

C

`Na_(2)[Na_(4)(PO_(4))_(5)]`

D

None of the above

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The correct Answer is:

A

Calgon used as water softner . The chemial compositive is `Na_(2)[Na_(4)(PO_(3))_(6)]`.

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