answer and show all work please

1. Which of the following elements exist as diatomic molecules? a. chlorine b. potassium c. silver d. oxygen 2. Electrons are among the (most, least) massive subatomic particles, and they are found (inside, outside) the nucleus. 3. State the number of protons, neutrons, and electrons in neutral atoms of each isotope. a. 13H b. 55133Cs c. 2656Fe d. 82207Pb 4. What is the electron configuration of a sulfur atom? 5. What atom has the electron configuration 1s22s22p63s23p3