Which of these groups of elements show the least electronegativity?

A.
inner-transition elements
B.
halogens (7A)
C.
alkali metals (1A)
D.
transition elements
E.
alkaline earth metals (2A)

1 answer

The group of elements that shows the least electronegativity among the options provided is:

C. alkali metals (1A)

Alkali metals, such as lithium, sodium, and potassium, have very low electronegativity values compared to other groups. Electronegativity generally increases across a period and decreases down a group in the periodic table. Alkali metals are found in Group 1, and their tendency to lose one electron makes them less electronegative.