Question

1.) I am in period two and have an atomic mass of eleven. Who am I?

2.) I have one hundred twenty one electrons and can be found in the same group as Zinc. Who am I?

3.) I am the only element with no neutrons in my nucleus. Who am I?

Answer 1

1.)Boron

2.)Cadmium has 48 electrons not 121 Mercury has 80 And Copernicum so they all have no 121 electrons

3.)Hydrogen