Given below are two statements : \ Statement-I : Noble gases have very high boiling points. \ Stat

Question

Given below are two statements : \ Statement-I : Noble gases have very high boiling points. \ Statement-II : Noble gases are monoatomic gases. They\ are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points.\ In the light of the above statements, choose the correct answer from the options given below :\

Professor PC Thomas Classes · Answer

(b) : All the noble gases are monoatomic. They have very low melting and boiling points because the only type of interatomic interaction in these elements is weak dispersion forces (van der Waals forces). Helium has the lowest boiling point ( 4.2 K ) of any known substance.\