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 18 - noble gases 18 - noble gases 2 - alkaline earth metals 2 - alkaline earth metals 17 - halogens

Answer 1

The element that has seven electrons in its outer shell, is fairly toxic, is a gas at room temperature, and is highly reactive belongs to Group 17 of the periodic table, which are the halogens.