What is the basic difference between the terms electron gain enthalpy and electronegativity?
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Electron gain enthalpy is the measure of the tendency of an isolated gaseous atom to accept an electron, whereas electronegativity is the measure of the tendency of an atom in a chemical compound to attract a shared pair of electrons.
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| Electron gain Enthalpy | Electronegativity |
| 1. It is tendency of isolated atom in gaseous state to attract electrons. | 1. It is the tendency of an atom in a molecule to attract the bonded electrons. |
| 2. It is the absolute value of an atom. | 2. It is the relative value of an atom. |
| 3. It does not change regularly in a period or a group. | 3. It changes regularly in a period or a group. |
| 4. It is measured in eV/atom or kJ mol-1 or kcal mol-1 | 4. It has no unit. |
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