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Electronegativity, symbol χ, measures the tendency of an atom to attract a shared pair of electrons (or electron density).

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As you go down a group it decreases because the bonding pair of electrons

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Across the period it increases This is mainly due to the increase in effective nuclear charge.

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The electronegativity is the tendency of an atom or a functional group to attract electrons (or electron density) towards itself.

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Atom’s ability to attract the electrons present in a chemical bond, or an atom’s ability to attract electrons when that atom is part of a specific compound.

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it increases

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It decreases.

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the property of an atom which increases with its tendency to attract the electrons of a bond.

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a measure of how strongly atoms attract bonding electrons to themselves.

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This occurs due to a greater charge on the nucleus, causing the electron bonding pairs to be very attracted to atoms.

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Electronegativity increases as you move from left to right across a period on the periodic table.

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It decreases due to an increase in the distance between the nucleus and the valence electron shell.

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The degree to which an element tends to gain electrons and form negative ions in chemical reactions.

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This happens because of a greater charge on the nucleus in which the electron bonding to be very attracted to atoms.

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Across the period it increases because of the increase in effective nuclear charge.

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It decreases as you go down a group because of the bonding of electrons.