Question

short notes on atomic radii &ionic radii​

Answer 1

Answer:

Atomic radii can be defined as the distance of the outermost shell of an atom from the centre of its nucleus. Being very small, it is usually expressed in nm (1 nm = 10 Ao = 103 pm = 10-9 m). The size of an atom is considered to be approximately 1.2 Ao or 0.12 nm.

Ionic radius, rᵢₒₙ, is the radius of a monatomic ion in an ionic crystal structure. Although neither atoms nor ions have sharp boundaries, they are sometimes treated as if they were hard spheres.

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Answer 2

Answer:

Atomic radius: distance between centre of nucleus and the outer shell of the valence shell.

Ionic radius: distance between centre of nucleus and the outer cell of the valence shell in ions

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