Which elements would react most easily with each other?

Question

Responses

an element with a high electronegativity and an element with a full shell of electrons

an element with a high electronegativity and an element with a single valence electron

an element with a high electronegativity and a second element with a high electronegativity

an element with a high electronegativity and an element with low reactivity

Answer 1

an element with a high electronegativity and an element with a single valence electron