Answer
a.(lithium and chlorine) and c.(potassium and oxygen) are likely to form an ionic compound
Work Step by Step
an ionic compound is formed by a metal and a nonmetal
a. since lithium is a metal and chlorine is a nonmetal, they can form an ionic compound
b. oxygen is a nonmetal and bromine is also a nonmetal, in this case they cannot form an ionic compound
c.potassium is a metal and oxygen is a nonmetal so, they can form an ionic compound
d. sodium is a metal and neon is a noble gas, which means neon is already stable. Therefore, they cannot form an ionic compound
e. cesium is a nonmetal, so is magnesium. In this case they cannot form an ionic compound
f. nitrogen is a nonmetal and fluorine is also a nonmetal. They cannot form an ionic compound
