Question

define electronagativity and it's trends with suitable example​

Answer 1

Answer:

The tendency of an atom to attract electrons to itself when combined in a compound is known as electronegativity. The factors which affect the electronegativity are atomic size and nuclear charge. Electronegativity decreases down a group and increases across a period. ...

Answer 2

Electronegativity:-

The electronegativity is the tendency of an atom in a molecule to attract the shared pair of electrons towards itself .

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• Electronegativity is a dimensionless property .
• It only indicates the net result of the tendencies of different element to attract the bone forming electron pair .
• Electronegativity is measured on several scales the most useful skills of electronegativity was devised by Lena Pauling in 1932 .
• The value of electronegativity defence or atomic size and nuclear charge :-

1. Atomic size :- The greater the size of the atom the lesser the electronegativity since the electrons being further away from the nucleus experience a lesser force of attraction .
2. Nuclear charge :- The greater nuclear charge the greater the electronegativity because increasing in nuclear charge cause electron attraction with a greater force .

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Tends in electronegativity :-

Since the nuclear charge increases due to an increase in atomic number electronegativity increases from left to right in the period .

Example:-

In second period electronegativity increases from Lithium to fluorine .