Which of the following nuclei would be the most stable?A.70 protons, 87 neutronsB.70 protons, 98 neutronsC.70 protons, 94 neutronsD.70 protons, 91 neutronsSUBMITarrow_backPREVIOUS
Question
Which of the following nuclei would be the most stable?A.70 protons, 87 neutronsB.70 protons, 98 neutronsC.70 protons, 94 neutronsD.70 protons, 91 neutronsSUBMITarrow_backPREVIOUS
Solution
The stability of a nucleus is determined by the ratio of neutrons to protons. The ideal ratio is about 1:1 for lighter elements (up to element 20, Calcium) and 1.5:1 for heavier elements.
All the given options have the same number of protons (70), so we need to find the one with the closest neutron to proton ratio to 1.5:1.
A. 87/70 = 1.24 B. 98/70 = 1.4 C. 94/70 = 1.34 D. 91/70 = 1.3
Option B, with 70 protons and 98 neutrons, has the closest ratio to 1.5:1 and would therefore be the most stable nucleus among the given options.
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