1) The intermolecular force(s) responsible for the fact that CH4 has the lowest

Question

1) The intermolecular force(s) responsible for the fact that CH4 has the lowest boiling GeH4, SnH4 is/are 2) Hydrogen bonding is a special case of 3) What types of intermolecular forces exist between NH3 and H2S? 4) Large intermolecular forces in a substance have what effects on boiling point, vapor pressure, surface tension, and heats of fusion and vaporization. 5) London Dispersion Forces tend to_in strength with increasing molecular weight. 6) The direct conversion of a solid to a gas is called 7) Define boiling point of a liquid with regard to the vapor pressure of the liquid and external or atmospheric pressure.

Explanation / Answer

1)

All of these molecules are non polar

So, the intermolecular force in them is London-Dispersion forces

Answer: London-Dispersion forces

2)

Hydrogen bonding is special case of dipole-dipole interaction

3)

NH3 is polar and it also form hydrogen bonding as H is attached toN

So, force in NH3 is:

Hydrogen bonding

Dipole-dipole interaction

London-Dispersion forces

H2S is polar but it can’t form hydrogen bonding

so, force in H2S is:

Dipole-dipole interaction

London-Dispersion forces

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