A scientist studies an element that has seven electrons in its outer shell, is fairly toxic, is a gas at room temperature, and is highly reactive. To which group of the periodic table does this element belong?(1 point) Responses 1 - alkali metals 1 - alkali metals 17 - halogens 17 - halogens 2 - alkaline earth metals 2 - alkaline earth metals 18 - noble gases

Answer 1

The element described has seven electrons in its outer shell, is fairly toxic, is a gas at room temperature, and is highly reactive. This information indicates that the element belongs to Group 17 of the periodic table, which is known as the halogens. Therefore, the correct response is:

17 - halogens