The mass number of an atom is equal to which of the following? question 15 options: the number of protons in a nucleus the number of protons plus the number of electrons in an atom the number of electrons circling the nucleus of an atom the number of protons plus the number of neutrons in a nucleus

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