How does the boiling point in down group?
rbphalakpdwzlg:
the strength of the van der Waals forces increases since the atoms have more electrons as you descend the group. ... - Nuclear charge increases, so the nuclear attraction on the outer electrons are stronger.
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At that point, vapor bubbles in the watercan grow. You have to heat the liquid with solutes up more to get the vapor pressure in it to equal the atmospheric pressure, so it has a higher boiling point. A very similar argument explains why solutes also lower the freezing point.
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boiling point increases down the group because of vander waal force of attraction.
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