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Compare atomic radii of Zr (Z = 40) and ...

Compare atomic radii of Zr (Z = 40) and Hf (Z = 72).

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Compare the atomic radii of fluorine and neon.

Why do Zr(Z = 40) and Hf(Z = 72) have comparable atomic radii ?

Using the a Aufbau principle, write the electronic configuration in the ground state of the following atoms : Boron (Z = 5 ) Neon (Z = 10) and Aluminium (Z = 13).

An element of atomic weight Z consists of two isotopes of mass number (Z-1) and (Z+2). Calculate the % of higher isotope.

Write the complete symbol for the atom with the given atomic number (Z) and atomic mass (A) (1) Z=17, A=35 (2) Z=92, A=233 (3) Z=4, A=9

Assertion (A) : Separation of Zr and Hf is difficult. Reason (R ) : Zr and Hf lies in the same group of the periodic table.

Why are Zr and Hf of same size?

Why are Zr and Hf of same size?