Question

Rank pure samples of each of the following species in order of increasing boiling point.

Options:
a) Hydrogen, Helium, Neon
b) Neon, Helium, Hydrogen
c) Helium, Hydrogen, Neon
d) Hydrogen, Neon, Helium

Answer 1

The boiling point of a substance is determined by intermolecular forces and molecular size. Helium has the lowest boiling point, followed by hydrogen, and neon has the highest boiling point.

Step-by-step explanation:

The boiling point of a substance is determined by several factors including intermolecular forces and molecular size. In general, substances with stronger intermolecular forces and higher molecular weights have higher boiling points.

Using this information, we can rank the given species in order of increasing boiling point:

1. Helium: Helium is a noble gas with low molecular weight and weak intermolecular forces, so it has the lowest boiling point.
2. Hydrogen: Hydrogen is a diatomic gas with slightly stronger intermolecular forces compared to helium, so it has a higher boiling point than helium.
3. Neon: Neon is another noble gas with higher molecular weight and stronger intermolecular forces compared to helium and hydrogen, so it has the highest boiling point among the given species.