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Last updated date: 29th Nov 2023
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MVSAT Dec 2023

The electronegativity of following elements increases in the order of?
Si, P, C, N

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Hint: The ability of an atom to draw mutual electrons (or electron density) to itself is referred to as electronegativity. The electronegativity of an atom is influenced by both its atomic number and the difference between its valence electrons and the charged nucleus.

Complete answer:
Electronegativity is the ability of an atom in a molecule to draw the mutual pair of electrons towards itself.
Since it is just a propensity, it is a dimensionless property. It essentially denotes the net product of atoms in various elements' proclivity to attract bond-forming electron pairs. Electronegativity is measured on many scales. Linus Pauling produced the most widely used scale. Fluorine is the most electronegative element on this scale, with a value of 4.0, and cesium is the least electronegative element, with a value of 0.7.
When we pass through a period of the current periodic table from left to right, the nuclear charge increases and the atomic scale decreases, so the value of electronegativity increases. In the modern periodic table, the atomic number increases as we step down the group. The nuclear charge rises as well, but the impact of the rise of nuclear charge is mitigated by the addition of one shield. As a result, as we step down the group, the importance of electronegativity decreases. In the halogen group, for example, as we step down the group from fluorine to astatine, the electronegativity value decreases.
So, Si < P < C < N is the correct order of electronegativity.

Metals have lower electronegativity values than nonmetals, which is a common finding. As a result, metals are electropositive in nature, whereas nonmetals are electronegative. Time two elements differ from their respective group elements in terms of properties due to their small scale and higher electronegativity value. The elements in the second cycle are similar to the elements in the third period. This occurs as a result of a minor variation in their electronegativities. As a result, a diagonal relationship is formed.