Question 646
What is the atomic number of Lanthanum (La)?
Question 647
How does the chemical behavior of later lanthanoids compare to other elements?
Question 648
How does the chemical reactivity of early lanthanoids compare to other elements?
Question 649
Why is the third ionization enthalpy of Lutetium (Lu) abnormally low?
Question 650
Why is the third ionization enthalpy of Gadolinium (Gd) abnormally low?