Question

what is atomic radius, metallic radius and covalent radius

Answer 1

Answer:

• ATOMIC RADIUS:The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding cloud of electrons. ... Electrons do not have definite orbits, or sharply defined ranges.

• METALLIC RADIUS:metallic radius is defined as one-half of the distance between the nuclei of two atoms in crystal or between two adjacent metal ions in the metallic lattice. Metallic radii: - decrease across the period due to increase in the effective nuclear charge.

• COVALENT RADIUS:The covalent radius, rcov, is a measure of the size of an atom that forms part of one covalent bond. It is usually measured either in picometres or angstroms, with 1 Å = 100 pm. In principle, the sum of the two co equal the covalent bond length between two atoms, R = r + r.

Answer 2

We can define the atomic radius of a chemical element as: The measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. ... The different radius is van der Waals radius, ionic radius, metallic radius and covalent radius.

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