Question

40. An element has the configuration [He]2s^2.
a. Which element is it?- Beryllium
b. Is it metal or nonmetal?- metal
c. How many valence (or outer shell) electrons does it have?- 2 valence electrons.

Is this correct?
Thanks
-MC

Answer 1

Yes, yes, yes.

go to the head of the class.

Answer 2

:D
-MC