Using the periodic table, predict the charges of the ions of the following element:
Okay guys, so let's predict the charge for the selenium atom so we have SE. Where is SE located? Sorry guys, selenium is going to be located in group 6A. 6A elements are 2 electrons away from reaching the normal gas configuration, so they need to gain 2 electrons.
So when we say gaining electrons we mean that it's going to be negatively charged, when we say lose electrons that means that it's going to be positively charged. So in this case we need to gain 2 electrons so it's negatively charged ion. Alright guys, let's move on.