Question

How is helium different from other elements in its group?

it has the same number of valence electrons as all other elements in its group

it has the same number of energy levels as all other atoms in its group

it has the same number of protons as all other members of its group

it has 2 valence electrons while other atoms in its group have 8

Answer 1

[AI-generated answer — Bot GPT 3.5]

Helium is different from other elements in its group because it has only 2 valence electrons, while all other elements in its group have 8 valence electrons. This difference in the number of valence electrons affects its chemical properties and reactivity compared to other elements in the same group.