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 17 - halogens 17 - halogens 1 - alkali metals 1 - alkali metals 18 - noble gases 18 - noble gases 2 - alkaline earth metal

Answer 1

The element you described has seven electrons in its outer shell, is fairly toxic, is a gas at room temperature, and is highly reactive. This matches the characteristics of the halogens, which are located in group 17 of the periodic table. Therefore, the correct response is:

17 - halogens