Chemistry
First ionisation enthalpy of two elements X and Y are 500 kJ mol-1 and 375 kJ mol-1 respectively. Comment about their relative position in a group as well as in a period.
Periodic Table
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Answer
It is given that,
X = 500 kJ mol-1
Y = 375 kJ mol-1
Their relative position in a group is X & Y as ionisation enthalpy decreases on moving down the group.
Their relative position in a period is Y & X as ionisation enthalpy increases on moving across a period.
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