By looking at a molecule\'s formula, how do I tell if it is polar, if it has Lon
ID: 928668 • Letter: B
Question
By looking at a molecule's formula, how do I tell if it is polar, if it has London dispersion forces, or if it exhibits hydrogen bonding? If the molecules all have London dispersion forces, how do I tell which one has the largest force? By looking at a molecule's formula, how do I tell if it is polar, if it has London dispersion forces, or if it exhibits hydrogen bonding? If the molecules all have London dispersion forces, how do I tell which one has the largest force? If the molecules all have London dispersion forces, how do I tell which one has the largest force?Explanation / Answer
Polarity of the molecules depends on type of the bonds. If the molecules have bonds which are attached to heteroatoms with greater electronegativity differences then the the bonds are polar and molecule may also be polar.
From the molecular formula we can predict the nature of the molecule. If it has hetero atoms then it is polar. It it has only homo atoms or only carbons and hydrogens then molecule has only london dispersion forces.
If hydrogen is attached N, O or F then it can form hydrogen bonding. That means if the molecule has H-F bonds are N-H bonds or O-H bonds then they will have hydrogen bonding.
If the molecules all have London dispersion forces, Then molecule with larger size will have the largest force.
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