Question

Which element would have the lowest electronegativity? (1 point)

Answer 1

The element that will have the lowest electronegativity is an element with a small number of valence electrons and a large atomic radius.

Electronegativity of an element is the ability or power of that element in a molecule to attract electrons to its Valence electrons.  The following are the properties of electronegativity:

• It increases across a period from left to right of the periodic table,

• It decreases down the periodic table groups

• Group 1 elements are the least (lowest) electronegative elements. These elements have the lowest valence electrons with a large atomic radius.

• Group 7 elements are the most electronegative elements.

Atomic radius of elements increase down a group because of a progressive increase in the number of shells occupied by electrons which increases the size. But it decreases across a period because electrons are accommodated within the same shell leading to greater attraction by the protons in the nucleus.

Learn more about electronegativity of elements here:

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