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The atomic mass and atomic number of lead are 208 and 82. The atomic mass and atomic number of bismuth are 209 and 83. The `"neutron"//"proton"` ratio in an atomA. Is higher in lead than in bismuthB. Is lower in lead than in bismuthC. Is equal in both lead and bismuthD. None of these |
Answer» Correct Answer - D `._(82)Pb^(208), p = 82, n = 208 - 82 = 126` `._(83)Bi^(209), p = 83, n = 209 - 83 = 126` `n//p` for `Pb = (126)/(82) = 1.53` `n//p` for `Bi = (126)/(83) = 1.51` `:. (n)/(p)` for `Pb gt (n)/(P)` for `Bi` |
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