The first ionisation enthalpies of Na, Mg, Al , And Si, are in the order:
Answer (1)
27th Oct, 2018
The correct answer to this question is Na < Mg > Al < Si
Despite the regular trend that Ionisation enthalpy increases with size, we see here except in case of Mg it is because of the fact that it has a stable electronic configuration with 3s completely filled in the ground state, which accounts for the above order.
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