Q. Which of the following hydrides has the lowest boiling point ?

 2009  285 Chemical Bonding and Molecular Structure Report Error

Solution:

Sulfur is not much electronegative as oxygen so that hydrogen sulfide is not as polar as water. Because of this reason comparatively less intermolecular forces exist for and the melting and boiling points are much lower than they are in water and other hydrides of 6th group elements.