Stability of complexes formed by transition elements .

1) Stability decreases with increase in atomic number of the elements. 2) For a given ligand , the complex containing the metal in higher oxidation state is the more stable one . E.g [Co(NH3)6]³+ is more stable than [Co(NH3)6]²+ . This is due to the fact that the higher the oxidation state, the metal cationContinue reading “Stability of complexes formed by transition elements .”

Ionization energy

Ionization energy is the minimum amount of energy needed to completely remove the valence electrons from the atom/ion and is directly related to the force of attraction on the electrons . The larger the nuclear charge and smaller radii of atom the larger the ionization energy (IE) . Ionization energy is also more for halfContinue reading “Ionization energy”

Atomic sizes across a period.

Atomic sizes ( in terms of radius) gradually decrease from Left to right across a period of elements. This is because within a period, all electron (s) are added to the same shell . However, at the same time the protons are being added to the nucleus making it more positively charged. The effect ofContinue reading “Atomic sizes across a period.”

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