Intermolecular Forces?
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PrabUppal
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How do you know when to mention van der waals in an exam question?
Also,I'm confused as to where van der waals forces are,like are they only in covalent molecules etc,I just find apply my knowledge on this topic to exam questions hard,any help is appreciated.
Also,I'm confused as to where van der waals forces are,like are they only in covalent molecules etc,I just find apply my knowledge on this topic to exam questions hard,any help is appreciated.
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Kallisto
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#2
(Original post by PrabUppal)
How do you know when to mention van der waals in an exam question?
Also,I'm confused as to where van der waals forces are,like are they only in covalent molecules etc,I just find apply my knowledge on this topic to exam questions hard,any help is appreciated.
How do you know when to mention van der waals in an exam question?
Also,I'm confused as to where van der waals forces are,like are they only in covalent molecules etc,I just find apply my knowledge on this topic to exam questions hard,any help is appreciated.
So these intermolecular forces are always in existence when different charges are forming bonds. The crystalline bonds of salts are a good example for that. The bonds in salts consists of a positive charge (Na+) and a negative one (Cl-).
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voltz
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Whenever the question mentions melting or boiling point, it wants you to talk about intermolecular forces
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Kallisto
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(Original post by voltz)
Whenever the question mentions melting or boiling point, it wants you to talk about intermolecular forces
Whenever the question mentions melting or boiling point, it wants you to talk about intermolecular forces
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PrabUppal
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#5
so do induced dipoles occur in non polar molecules and permanent dipoles occur in non polar molecules?What would I say in an exam?
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PrabUppal
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#6
(Original post by Kallisto)
It could also be asked for the bonds of certain molecules, the bonds of water molecules for instance. Can remember me to be asked for those forces in such a context.
It could also be asked for the bonds of certain molecules, the bonds of water molecules for instance. Can remember me to be asked for those forces in such a context.
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alow
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(Original post by PrabUppal)
so do induced dipoles occur in non polar molecules and permanent dipoles occur in non polar molecules?What would I say in an exam?
so do induced dipoles occur in non polar molecules and permanent dipoles occur in non polar molecules?What would I say in an exam?
Non-polar molecules can have instantaneous dipoles which can induce dipoles in nearby molecules (Dispersion).
Both of these are "van der Waals" forces.
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