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)

Question

Responses

17 - halogens
17 - halogens

18 - noble gases
18 - noble gases

1 - alkali metals
1 - alkali metals

2 - alkaline earth metals

Answer 1

The element being 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 elements in Group 17 of the periodic table, known as the halogens. Therefore, the correct response is:

17 - halogens