Question 1711
Based on the information, what is the effect of lanthanoid contraction on the separation of second and third series elements?
Question 1712
Why is the shielding of one 4f electron by another considered imperfect?
Question 1713
According to Table 4.2, what is the approximate ionic radius of Ni2+?
Question 1714
What is the electronic configuration of a Co2+ ion?
Question 1715
Based on Table 4.2, which element has the lowest enthalpy of atomisation?