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20 POINTS PLEASE HELP ME!!!!
The atomic symbol 206/82 Pb represents lead-206 (Pb-206), an isotope that has 82 protons and 124 neutrons. Which atomic symbol could represent an isotope that undergoes radioactive decay to produce Pb-206?
A) 238/92 U
B) 222/87 Pb
C) 178/72 Hf
D) 192/77 Pb

Respuesta :

Rosie03
The atomic symbol that could represent an isotope that undergoes radioactive decay to produce Pb-206 would be 238/92 U. 

the answer is a 238/82 u


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