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Question
Defineelectronegativity. How does it differ from electron gain enthalpy?
Defineelectronegativity. How does it differ from electron gain enthalpy?
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Solution
Electronegativityis the ability of an atom in a chemical compound to attract a bondpair of electrons towards itself.
Electronegativityof any given element is not constant. It varies according to theelement to which it is bound. It is not a measurable quantity. It isonly a relative number.
On theother hand, electron gain enthalpy is the enthalpy change that takesplace when an electron is added to a neutral gaseous atom to form ananion. It can be negative or positive depending upon whether theelectron is added or removed. An element has a constant value of theelectron gain enthalpy that can be measured experimentally.
Electronegativityis the ability of an atom in a chemical compound to attract a bondpair of electrons towards itself.
Electronegativityof any given element is not constant. It varies according to theelement to which it is bound. It is not a measurable quantity. It isonly a relative number.
On theother hand, electron gain enthalpy is the enthalpy change that takesplace when an electron is added to a neutral gaseous atom to form ananion. It can be negative or positive depending upon whether theelectron is added or removed. An element has a constant value of theelectron gain enthalpy that can be measured experimentally.
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