1.

The element with Mass number gCentains 3碍31구's MtYe.neutronsas compare to protons Find the symbrf ele ents?

Answer»

Number of protons +Number of neutrons = mass number = 81Let the number of protons = x Number of neutrons = x131.7/100 = 1.317x X+1.317x = 81 X = 35So, atomic number = 35 Element with atomic number 35 =Br



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