Which of the following have largest ionisation energy ?
A) Zn
B) Sc
C)Cd
D) Hg
Dear Student,
Zn has largest ionisation energy as ionisation energy increases from left to right in a row and Zn is present after Sc in its row, this trend is due to decrease of atomic radius towards the right of row, that atomic radius decreases due to increasing nuclear charge in a row from left to right.
And Ionisation energy decreases from top to bottom in a group as atomic radius increases down the group. Hence Zn has high ionisation energy tha Cd and Hg.
Regards
Zn has largest ionisation energy as ionisation energy increases from left to right in a row and Zn is present after Sc in its row, this trend is due to decrease of atomic radius towards the right of row, that atomic radius decreases due to increasing nuclear charge in a row from left to right.
And Ionisation energy decreases from top to bottom in a group as atomic radius increases down the group. Hence Zn has high ionisation energy tha Cd and Hg.
Regards