Answer:
d. Sulfur and chlorine.
Step-by-step explanation:
A covalent bond is formed by two non-metals with similar electronegativities. As a consequence, they share one or more pairs of electrons between their nuclei.
Which of the following pairs of elements is most likely to share one or more pairs of electrons between their nuclei?
a. Lithium and iodine. NO. Lithium is a metal and iodine a non-metal.
b. Sodium and lead. NO. Both sodium and lead are metals.
c. Copper and oxygen. NO. Copper is a metal and oxygen is a non-metal.
d. Sulfur and chlorine. YES. Both are non-metals.