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16. in modern periodic table..cus we move from left to rightalong the period, the atomic size of the elements .al increasesby does nol chondee decreasesdzfirst_encilases and then decreases.​

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Answer:

ATOMIC SIZE USUALLY increases on goning down in a group as the number of shells also increases .But,it decreases on moving left to right across the period due to the shrinking of ATOM because of increasing nuclear FORCE



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