kimmie277
contestada

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?

Respuesta :

xxXPIYONICXxx

1.)Boron

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

3.)Hydrogen

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