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Question
During the formation of NaCl, which of the enthalpies are negative?
During the formation of NaCl, which of the enthalpies are negative?
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Solution
The correct option is C Both A and B
In formation of NaCl, electron affinity of Cl, △Hf, are negative, (because chlorine is more electronegative, when gains an electron it becomes stable) (and due to electrostatic force of attraction △Hf is negative).
In formation of NaCl, electron affinity of Cl, △Hf, are negative, (because chlorine is more electronegative, when gains an electron it becomes stable) (and due to electrostatic force of attraction △Hf is negative).
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