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If the distance between the centres of the atoms of potassium and bromine in KBr (potassium - bromide) molecule is `0.282xx10^(-9)`m, find the centre of mass of this particle system from potassium (mass of bromine = 80 u, and of potassium = 39 u).

A

`9.3xx10^(-2)nm`

B

`18.96xx10^(-2)nm`

C

`27.9xx10^(-2)nm`

D

`3.3xx10^(-2)nm`

Text Solution

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The correct Answer is:
B
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