CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Barring Helium, the melting and boiling points of every noble gas lie within a range of 10 degrees Celsius – True or false?
  1. True
  2. False


Solution

The correct option is A True
All these noble gases are monoatomic gases at room temperature. The atomicity is explained by the stable valence electron configuration. Can you recall what the valence configuration in general is?
These elements are gases at room temperature because in the liquid/solid states, very weak dispersion forces hold these atoms together. So to reach such states, large negative Celsius temperatures are required.  Let us look at the values:
Noble gasMelting point(C)Boiling point()CNumber of electronsHe2692Ne24924510Ar18918618Kr15715236Xe11210954Rn716286
As you can see, the largest range between melting point and boiling point is for Rn and this is <10 degrees Celsius. Hence the statement in the question is true!
 

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More...


People also searched for
QuestionImage
QuestionImage
View More...



footer-image