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Question

If the ionization potential of Na is 495.8 Kj mol1, the electron affinity of CI is 349.4 kJ mol1 and lattice energy is 776 kJ mol1, the true statement for the formation of ionic bond in NaCl is :

A
total energy released per mole of NaCl formed is 626 kJ
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B
the ionic bond formed is unstable
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C
the total energy absorbed per mole of NaCl formed is 1125.4 kJ
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D
net energy released in this process is 629.6 J
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