Account for the following trends In atomic and Ionic radii of transition metals:- Ions of the same charge In a given series (3d, 4d or 5d) show progresslve decrease in radll with increasing atomic number.

Account for the following trends in atomic and ionic radii of transition metals. The atomic radii of the corresponding elements in '4d' series and 5d series are virtually the same.

Account for the following trends in atomic and ionic radii of transition metals. The atomic radii of elements in 4d series are more than that of corresponding elements in 3d series.

The statement that is not correct for the periodic classification of elements is The properties of elements are periodic functions of their atomic numbers. Non-metallic elements are lesser in number than metallic elements. Electronegativity of the elements along the period from left to right increases in a regular manner. For transition elements the d-subshells are filled with the electrons monotonically with increase in atomic number.

Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect? a)Because of the large size of the Ln(III) ions, the bonding in its compounds is predominantly ionic in character. b)The ionic sizes of Ln (III) decrease in general with increasing atomic number. c)Ln(III) compounds are generally colourless. d)Ln(III) hydroxides are mainly basic in character..

Assertion : Anhydrous copper (II) chloride is covalent while anhydrous copper (II) fluoride is ionic in nature. Reason : In halides of transition metals, the ionic character decreases with increase in atomic mass of the halogen.

Which of the following statements regarding basicity of lanthanide 3^+ ions is correct? 1)Basicity decreases with increase in ionic radius 2)Basicity decreases with decrease in ionic radius 3)More basic oxo-salt decomposes more readily that the less basic 'oxo-salt 4)More basic ion hydrolyse more readily

Zirconium (Zr) belongs to. ‘4d and Hafnium (Hf) belongs to 5d transition series: It is difficult to separate them. Explain.

A large number of orbitals are possible in an atom. Using s, p,d or f notation describe the orbital with the following quantum numbers . i) n=4 , l=0