Which elements have the last electrons: n=3 and n=1?

Name the element in group 17, period 2. (periodic table)

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?