Question

which has the lowest electronegativity
lithium
magnesium
francium
helium

Answer 1

Among the elements listed—lithium, magnesium, francium, and helium—francium has the lowest electronegativity. Francium (Fr) is an alkali metal located in Group 1 of the periodic table, and it is highly reactive, which typically correlates with lower electronegativity values. In comparison, lithium (Li) and magnesium (Mg) have higher electronegativities, while helium (He), being a noble gas, typically does not form bonds and is not assigned an electronegativity value in the same way.