General Characteristics of D-Block elements:
Every elements of the D-block show identical properties due to the existence of similar electronic configuration of the outermost shell. The outermost shell configuration is ns2. Given below is a list of general properties like the atomic and ionic radii, and the ionization potentials noticed among the D-block elements.
Metallic character:
Every transition element is metals.
Atomic size:
The atomic size of d-block elements reduces from Sc to Zn due to rise in nuclear charge. Their atomic sizes are lower than that of s-block elements.
Ionization potential:
The I.P. values of transition elements are in-between those of s-block and p-block elements. This exhibits that they are more electropositive than p-block elements and less reactive than s-block elements. Due to in-between values I.P. they form ionic compounds and also covalent compounds.
Oxidation states:
Transition elements illustrate variable state oxidation in their compounds. The main reason of variable oxidation state is that there is much small energy difference in between (n-1) d and ns orbitals. As an outcome, electrons of (n-1) d orbitals and also ns-orbitals take part in bond arrangement. Variation in oxidation state is associated to their electronic configuration.
Conductivity:
D-Block elements are very good conductor of heat and electricity.
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