The electronegative value of Potassium is 0.8 Pauling units
What is Electronegativity:
This is the tendency or strength which an atom attracts or pulls a shared electron in a covalent bond.
The electronegative value of an element is basically the strength or affinity towards electrons of other atoms and it follows a trend in the periodic table which is it increases across the period and decreases down the group.
In the given question, we have an element with electron configuration 2, 8, 8, 1. Sum this up and we would get the atomic number of the element.
[tex]2+8+8+1=19[/tex]
The element with an atomic number of 19 is potassium which belongs to group (i) and they're primarily consisted of metals with high electro-positivity which tends to make their electron affinity lower and they generally have smaller or lower electronegative value.
Using the periodic table, we would easily see that the electronegative value of Potassium is 0.8 Pauling units.
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