Of the atoms below, is the least electronegative.
A) Rb
B) F
C) Ca
D) Cl
E) Si

Question

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Electronegativity is the measure of an atom's ability to attract electrons towards itself. Typically, elements in the lower left corner of the periodic table have lower electronegativities, while elements in the upper right corner have higher electronegativities.

Out of the given options, Rb (rubidium) is in the lower left corner of the periodic table and has a relatively low electronegativity compared to the other options. F (fluorine) and Cl (chlorine) are both halogens located towards the upper right corner of the periodic table, and are known for their high electronegativities. Ca (calcium) and Si (silicon) are located in between Rb and F/Cl, but have higher electronegativities compared to Rb. Therefore, Rb is the least electronegative option given.

Of the Atoms Below, Is the Least Electronegative