Explain which of the atoms has the smallest radius

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Which of the following atoms has the smallest radius? At, Br, Ge, or Pb? The answer is Ge. Based on trends, wouldn't Br have a smaller atomic radius than Ge? Can you please explain why Ge has a smaller radius than Br? OR just solve the question and explain why Ge is the answer? Thank you in advance

Reference no: EM13314282

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