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प्रश्न
Write an explanation.
Atomic radius
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उत्तर
Atomic radius is the distance from an atom’s nucleus to its outermost electron shell and is used to represent the size of an atom; it is usually given in picometres. Because electrons form a diffuse cloud, atomic radius is an approximate measure rather than a fixed boundary. Across a period the atomic radius decreases as increasing nuclear charge pulls the same-shell electrons closer, while down a group the radius increases because each successive element has an extra electron shell.
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संबंधित प्रश्न
Answer the following in respect of element `31/15 P`
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Arrange the following as per the instruction given in the bracket:
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Explain your choice.
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