InterviewSolution
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InterviewSolution
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Select CORRECT atomic size order(s).(A) K> Ba(B) Ae> Ga(C) In > Te(D) La > Ac |
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Answer» (D) La > Ac Atomic size increases as we move down a group and decreases as we move from left to right in a period. K and Ba are in the same group. K < BaAl and Ga are in the same group. Al < GaIn and Tl are in the same group. In < TlLa and Ac are in the same group. But, the nuclear radii of the d-block elements inside a given series decrease with increment in the nuclear number. This is because of the expansion in the atomic charge that attracts the electron cloud inwards bringing about a decrease in size. |
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