Which element is a noble gas, helium, phosphorus, beryllium, lithium

The correct answer is A. Helium

Explanation:

In chemistry, a noble gas refers to a group of elements placed in group 18, which is located in the last column from left to right in the periodic table. Additionally, these elements are defined by their low reactivity, also as gases, they do not have color or odor. Helium is part of this group that contains other 5 elements because Helium characteristics are similar to other noble gases, indeed this is the first noble gas in the periodic table. Additionally, helium is an abundant element found in all the universe especially in stars. Thus, the element that is a noble gas is Helium.

uh, mate. what's the question?

answer; mixture;