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What is the element with the lowest electronegativity value? How do you determine this?

a. cesium
b. helium
c. calcium
d. fluorine

Answer 1

Electronegativity order, from lowest to highest is:

#cesium < calcium < helium < "fluorine"#

In the Periodic Table, electronegativity increases with elemental height and moves to the right; consequently, it decreases with elemental height and moves to the left.

The unusual electronegativity value of certain elements (like helium) has been noted by @truong-son-n in a very insightful comment that can be found beneath this explanation.

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Answer 2

Kai Bowman

The element with the lowest electronegativity value is francium (Fr). Electronegativity values are determined through experimental measurements and theoretical calculations based on factors such as atomic size, nuclear charge, and electron configuration. Francium has the lowest electronegativity value because it has the largest atomic size and the least attraction for electrons due to its position in the alkali metal group of the periodic table.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

What is the element with the lowest electronegativity value? How do you determine this?

a. cesium b. helium c. calcium d. fluorine

a. cesium
b. helium
c. calcium
d. fluorine