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A solution containing 28 g phosphorous i...

A solution containing 28 g phosphorous in 315 g `CS_(2)` (b.p. = `46^(@)C`) boils at `47.9^(@)C and (K_(b) "for" `CS_(2) "is" `2.34^(@)C//"molar")`. What will be molecular formula of phosphorus ? (assuming complete association)

A

`P_(4)`

B

`P_(8)`

C

`P_(2)`

D

None

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The correct Answer is:
A
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