There are seven diatomic elements: H2, N2, O2, F2, Cl2, Br2, and I2. F2 and Br2 are reactive halogens that could be used instead of chlorine in an addition reaction.
We have a Science tutor online right now to help you!
To chat with a tutor, please set up a tutoring profile by creating an account and setting up a payment method. If you initiate a chat, please note you will be charged $0.50 a minute for tutoring time.