Which of the following statements is not corr | vedclass

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(B) Noble gases are generally inert. $Ar$ is used in electric bulbs to prevent the oxidation of the filament. $He$ is used in cryogenic applications t

Vedclass · Accepted Answer

$Kr$ is obtained during radioactive disintegration

Vedclass · Answer

(B) Noble gases are generally inert. $Ar$ is used in electric bulbs to prevent the oxidation of the filament. $He$ is used in cryogenic applications to produce very low temperatures. $Rn$ is a radioactive element with a half-life of $3.8 \ days$. $Kr$ is primarily obtained from the atmosphere via fractional distillation of liquid air,not from radioactive disintegration. $Rn$ is the noble gas that is formed as a byproduct of the radioactive decay of radium $(^{226}Ra)$. Therefore,the statement that $Kr$ is obtained during radioactive disintegration is incorrect.

Column-$I$	Column-$II$
$(a)$ $XeF_4$	$(i)$ pyramidal
$(b)$ $XeF_6$	(ii) square planar
$(c)$ $XeOF_4$	(iii) distorted octahedral
$(d)$ $XeO_3$	(iv) square pyramidal

Which of the following statements is not correct for a noble gas?

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Match the Xenon compounds in Column-$I$ with their structures in Column-$II$.
Column-$I$ Column-$II$
$(a)$ $XeF_4$ $(i)$ pyramidal
$(b)$ $XeF_6$ (ii) square planar
$(c)$ $XeOF_4$ (iii) distorted octahedral
$(d)$ $XeO_3$ (iv) square pyramidal

Which noble gas has the lowest boiling point?

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