What characteristic distinguishes helium (He) from the other noble gases?

Helium has a strong odor.

Helium is highly reactive.

Helium has two valence electrons.

Helium has a milky-white color.

Helium has two valence electrons.

The correct characteristic that distinguishes helium (He) from the other noble gases is that helium has two valence electrons. Unlike the other noble gases, which typically have eight valence electrons, helium only has two.