H 2 O. HF. H 2 Te. SbH 3. HI. H 2 Se. NH 3. H 2 S. AsH 3. SnH 4. HCl. HBr. PH 3. GeH 4. SiH 4. CH 4. Boiling points of hydrides of groups 4,5 6 and 7. 100 0 -100 -200. Boiling point ( o C).
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Boiling points of hydrides of groups 4,5 6 and 7.
The group 4 hydrides (CH4 to SnH4) show the expected trend ie boiling point increases as molecular mass increases.
In the group 5 hydrides it is apparent that ammonia (NH3) has a higher than expected boiling point.
In the group 6 hydrides it is apparent that water (H2O) has a higher than expected boiling point.
1st 2nd 3rd 4th
Member of series
In the group 7 hydrides it is apparent that Hydrogen fluoride (HF) has a higher than expected boiling point.
The higher than expected boiling points are due to hydrogen bonding.