Elements in group 7A in the periodic table are called the halogens; elements in group 6A are called the chalcogens. (a) What is the most common oxidation state of the chalcogens compared to the halogens?

Video transcript

Hello. Everyone in this video, we're going to be talking about the most common oxidation state of group one A elements as well as Group two A elements. So there's actually a little pr trend to help us out with that because we have the group one A elements which are the alkali metals. So any of the elements in the first Column, which is group one a. So let's go ahead, write that down. First Group one a. It's always going to have a plus one oxidation state. It's also known as a common, predictable oxidation state. And then we have also the group to A. So the Call them right next to group one a. It's always going to have a plus to oxidation states. And what these mean these oxidation states with plus one and plus two. It's because these numbers are coming from how they tend to lose either the one electron or two electrons. So in our case of the group one a with a plus one charge. It's because it tends to lose one electron And then for the plus two it tends to lose two electrons. And because electrons are negative anything if we lose a negative, of course we're going to do more of a positive. And because of that, that's why we have those plus one in plus two oxidation states. So the most common oxygen state of group one is going to be plus one And the most common for a group to a is going to be plus two. So I go I'll go ahead and highlight those two. And that's going to be our answer.