Question

relative electronegativity quick check
which quantity determines how two atoms bond? (1 point)
the difference in the number of valence electrons
the sum of their electronegativities
their total number of valence electrons
the difference in their electronegativities

Explanation:

Electronegativity difference is a key factor in determining bond type. If the difference is large, it tends to form an ionic bond. If the difference is small or zero, it forms a covalent bond (polar or non - polar). Valence electron number differences or sums do not directly determine the bond type in the way electronegativity difference does.

Answer:

the difference in their electronegativities