Question

Why Zr And Hf have same properties

Answer 1

Zr and Hf have same properties due to lanthanoid contraction.

Answer 2

Answer:

Zr And Hf have same properties since both have same atomic radii

Explanation:

Due to shielding effect, Zr and Hf have similar atomic atomic radii & same electronic configuration.

Therefore, these two elements have similar like properties chemical behavior, lattice energies, etc.

This phenomenon is called lanthanide contraction. And Zr & Hf are called chemical twins.

Lanthanide contraction -

Lanthanide contraction is the steady decrease in the size of the atoms and ions of the rare earth elements with increasing atomic number from lanthanum (atomic number 57) through lutetium (atomic number 71).