Question

which of the following elements has the lowest electronegativity?
lithium
carbon
fluorine
bromine

Explanation:

Electronegativity increases across a period (from left to right) and decreases down a group in the periodic table. Lithium (Li) is an alkali metal (Group 1), carbon (C) is in Group 14, fluorine (F) is in Group 17 (most electronegative group), and bromine (Br) is in Group 17 but lower than F. Among these, Li is the left - most (in its period) and has the lowest electronegativity.

Answer:

lithium