Which of the following is not an example of a covalent bond? h – o br – br na – i h – f

Light waves can move through , but they travel fastest when they move through a(n) .

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals

How can nonpolar molecule contain polar covalent bonds