Question #0ae32

1 Answer
Nov 10, 2016

Answer:

The atomic mass would be 8.....

Explanation:

.....which means that the substance is 8-beryllium, which is an unstable isotope of beryllium; the stable isotope is the one that contains 4 protons and 5 neutrons.

The number of electrons would be 4, and as this is an atom there is no overall charge. An overall charge would only occur if one or more electrons were lost.

Config is #1s^2 2s^2#