A certain nuclide contains 128 neutrons and has an initial neutron-to-proton ratio

CHEMISTRY · Single correct · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

A certain nuclide contains 128 neutrons and has an initial neutron-to-proton ratio N/Z=1.28N/Z=1.28. After a single α\alpha-decay, the nearest value of its new N/ZN/Z ratio is (a) 1.241.24 (b) 1.291.29 (c) 1.261.26 (d) 1.311.31

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