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A 0.001 molal aqueous solution of a comp...

A 0.001 molal aqueous solution of a complex `[MA_8]` has the freezing point of `-0.0054^(@)C`. If the primary valency of the salt undergoes 100% ionization and `K_f` for water =1.8 K molality^(-1) the correct representation of complex is

A

`[MA_8 ]`

B

`[MA_7 ]A`

C

`[MA_6 ]A_2`

D

`[MA_5 ]A_3`

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The correct Answer is:
C
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