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The atomic mass of Lead is 208 and its atomic number is 82. The atomic mass of Bismuth is 209 and its atomic number is 83. The ratio of neutrons/protons in the atom.

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higher of Pb

higher of Bi

same of both

None of these

answer is A.

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Detailed Solution

The ratio of neutrons / protons in the atom will be higher of Pb.

Because none of neutrons are same in Lead & Bismuth but number of protons

are more in Bismuth.

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