The element that is in the list that is not a main group element is the element molybdenum(Mo).
The periodic table is composed of groups and periods. There are about eighteen groups and eight periods in the periodic table. The main group elements refer to the elements of the s and p block.
The element that is in the list that is not a main group element is the element molybdenum(Mo).
Learn more about main group elements: https://brainly.com/question/1195122
