Rank the electronegativity values of lithium, oxygen, potassium, and selenium from lowest to highest

The electronegativity values of lithium, oxygen, potassium, and selenium from lowest to highest is potassium, lithium, selenium and oxygen.  

The electronegativity of an element is a measure of the tendency of an atom of element to attract bonding pair of electrons. Electronegative elements have the ability to attract shared electrons of covalent bonds to itself.

The most electronegative element is fluorine. Electronegativity increases across the period in the periodic table .

Electronegativity decreases down the group in the periodic table. Generally metallic elements are have lower electronegativity. This is because they mostly give out there electrons.

Therefore,  the electronegativity values of lithium, oxygen, potassium, and selenium from lowest to highest is potassium, lithium, selenium and oxygen.  

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Potassium < lithium <  Selenium < Oxygen

Explanation:

Oxygen has the highest electronegativity value from the given choices.

Electronegativity of an element is a property that combines the ability of its atom to lose and gain electrons.

It is a measure of the relative tendency with which atoms of the element attracts valence electrons in a chemical bond.

Potassium and lithium are in group 1 , selenium and oxygen are group 7;

 So group 1 elements will have lower electronegativity value.

Potassium is below lithium in group 1 and its electronegativity value will be lower.

Selenium is below oxygen and also, its electronegativity value is lesser.

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