bonnie127 bonnie127

11-10-2016
Chemistry

contestada

How many protons are in the nuclues of an atom of beryllium?

Respuesta :

11-10-2016

Look at your periodic
Table. There are two numbers next to each element. Top number is mass number= protons+ neutrons

Atomic number= number if protons

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Johannes02 Johannes02

11-10-2016

Top number is mass number= protons+ neutrons is my answer also

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