The following chemical equation is not balanced: i2 + na2s2o3 nai + na2s4o6 when this chemical equation is correctly balanced, what is the coefficient of the nai molecule? a. 1 b. 2 c. 3 d. 4

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided