Which of the followinh compounds has the highest percentage of hydrogen atoms by mass

Define a is a tiny pavket of energy

What is the atomic number of an atom that has 6 protons

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