Question

Place charges and electron dots as needed on each ion. As Se Br K Ca Ga. I answered:

As3+
Se2-
Br-
K+
Ca2+
Ga2+

but i got it wrong
so please helppp!!!

Answer 1

I don't understand the question. As can have +3 or +5. The others are ok EXCEPT Ga should be +3. I don't get the dots part.

That may mean for Br^- you do it this way.
.. -
:Br:
..
Se would follow a similar pattern.
Ca and K are ok as is.
Ga would be change to +3.
K is ok as is.