Which of the following is most likely a heavier stable nucleus? Select all that apply: A nucleus with a neutron:proton ratio of

Question

Which of the following is most likely a heavier stable nucleus?
Select all that apply:
A nucleus with a neutron:proton ratio of 1.05
A nucleus with a neutron:proton ratio of 1.49
The nucleus of Sb-123
A nucleus with a mass of 187 and an atomic number of 75

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