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Amongst the following select the element havinghighest ionization enthalpy.A. SodiumB. PotassiumC. BerylliumD. Magnesium

Answer» Correct Answer - C
Ionisation enthalpy increases on moving from left to right in a period and decreases on moving down in a group . Thus , order of ionisation enthalpy is
`Be gt Mg gt Na gt K`


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