Arrange the following elements from highest to lowest ionization energy:

Question

The options are:
a) Be, Mg, Ca, Rb, Y
b) Be, Mg, Ca, Rb, Sr
c) Rb, Sr, Ca, Be, Mg
d) Rb, Sr, Ca, Mg, Be
e) Be, Mg, Ca, Sr, Rb

is it d)?

Answer 1

Yes, you are correct. The correct answer is d) Rb, Sr, Ca, Mg, Be. Ionization energy generally increases from left to right across a period and decreases from top to bottom within a group in the periodic table. Therefore, Rb has the highest ionization energy, followed by Sr, Ca, Mg, and Be with the lowest ionization energy.