All of the following periodic properties decrease across a period of the Modern periodic table, except
A
Metallic character
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B
Atomic radii
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C
Basic nature of oxides
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D
Number of shells
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Solution
The correct option is D Number of shells The number of shells remains the same across a period because all the elements in the period have the same number of filled shells in their electronic configuration.
Hence, the correct answer is option (d).