Question
Chemistry Question on trends in periodic table
Which of the following has minimum ionization energy?
A
Ge
B
Sc
C
As
D
Br
Answer
Sc
Explanation
Solution
Sc, Ge, As and Br all the four elements are placed in 4th period in the periodic table. In a period, the ionisation energy increases from left to right and here is no exception. Sc has minimum ionisation energy among these. (It is a general conclusion that ionisation energy of d-block elements are found greater than s-block elements but lower than p-block elements).