Question

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Describe the properties of d and f block elements
with full explaination??


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Answer 1

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Properties of d block elements :

The general electronic configuration of these element is (n–1)1 to 10 ns0 to 2. ... The definition of transition metal excludes Zn, Cd and Hg because they have complete d- orbital. Their common oxidation state is Zn++, Cd++, Hg++.

General Characteristics of D-Block elements

• Metallic Nature.
• Melting and Boiling Points.
• Ionic Radii.
• Atomic Volume and Densities.
• Ionization Potentials.
• Electronic Configuration.
• Oxidation State.

Properties of f block elements :

The f block elements are the lanthanides and actinides and are called the inner transition elements because of their placement in the periodic table due to their electron configurations. The f orbitals of the electron shell are filled with “n-2.” There is a maximum of fourteen electrons that can occupy the f orbitals.

General Characteristics of D-Block elements

• They are heavy metals.
• They generally have high melting and boiling points.
• They exhibit variable oxidation states.
• They form coloured ions.
• They have the tendency to form complex compounds.
• Actinoids are radioactive in nature.

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Answer 2

The d-block of the periodic table contains the elements of the groups 3-12 in which the d orbitals are progressively filled in each of the four long periods. The f-block consists of elements in which 4 f and 5 f orbitals are progressively filled. They are placed in a separate panel at the bottom of the periodic table