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Which among the following elements has the largest atomic radii? (a) Na (b) Mg (c) K (d) Ca
Which among the following elements has the largest atomic radii?
(a) Na
(b) Mg
(c) K
(d) Ca
CBSE | Chemistry | Class 10 | NCERT Exemplar | Periodic Classification of Elements | Science
Which among the following elements has the largest atomic radii?
(a) Na
(b) Mg
(c) K
(d) Ca

Solution: The answer is (c) K

Explanation: Because atomic radii decrease from left to right during a period of time, K has the biggest atomic radii of all the elements. This is due to an increase in nuclear charge, which tends to drive the electron closer to the nucleus, resulting in a reduction in the size of the atom overall. As a result, K has the biggest atomic radius of all the elements.

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