Transition metals are from group 3 to group 12.
<span>I didn't know Selenium was considered organic? :P atoms form ions that mimic the electronic structure of noble gases. so add or subtract electrons from the atom to achieve the configuration of a noble gas.</span>
Re-read and go back and look for A & B and then whatever A & B is solve for it and then get your answer
I think it will be letter A tbh
Hope this helps you out
