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Question
Which of the following has the least negative electron gain enthalpy?
Which of the following has the least negative electron gain enthalpy?
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Solution
The correct option is A P
Electron gain enthalpy is defined as the change in energy (in kJ/mole) of a isolated gaseous atom when an electron is added to the atom to form a negative ion.
Electron gain enthalpy increases as we move from left to right across the period. Phosphorus has half-filled electronic configuration and hence, it has the least electron affinity among the four.
Electron gain enthalpy is defined as the change in energy (in kJ/mole) of a isolated gaseous atom when an electron is added to the atom to form a negative ion.
Electron gain enthalpy increases as we move from left to right across the period. Phosphorus has half-filled electronic configuration and hence, it has the least electron affinity among the four.
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