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Identify correct statements from the following
A) Natural gas is the commerical source of helium
B) First noble gas compound prepared is red in colour
C) Among the non-radioactive noble gases the element with highest boiling point is xenon
D) In the reaction of ${XeF}_{2} with {PF}_{5}, {XeF}_{2}$ is a fluoride acceptor

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B, C only

A, C, D only

B, C, D only

A, B, C only

answer is B.

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Detailed Solution

C) Boiling point . . .He < Ne < Ar < Kr < Xe < Rn (Rn is radioactive)….. down the group dispersion forces become stronger, boiling point increases.

D) $\underset{Fluoride donar}{{XeF}_{2}} + \underset{Fluoride acceptor}{{PF}_{5}} \overset{}{\to} {[XeF]}^{+} {[{PF}_{6}]}^{-}$

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