Question

i am the least massive of all the alkaline earth metals. who am i? view periodic table tap on an option below to select or deselect an answer. lithium (li) hydrogen (h) aluminum (al) francium (fr) beryllium (be) fluorine (f) radium (ra) scandium (sc)

Explanation:

Alkaline earth metals are Group 2 elements on the periodic table. Among the options, only Beryllium (Be) is a Group 2 element, and it is the lightest (least massive) member of this group. The other options belong to different groups: Lithium is Group 1, Hydrogen is Group 1, Aluminum is Group 13, Francium is Group 1, Fluorine is Group 17, Radium is Group 2 but more massive than Be, and Scandium is Group 3.

Answer:

Beryllium (Be)