A. What is the value of A in the following nuclear reaction? 238 92 U-->234 90 T

Question

A. What is the value of A in the following nuclear reaction? 238 92 U-->234 90 Th + AZx? B. What is the value of Z in: 238 92 U-->234 90 Th+AZ X? C. Write the balance equation for the following reaction? 56 26(aB) 6029 Cu? On this one, I came up with: 56 26 Fe+ 4 2 H-->60 29 Cu +0 -1 e, but apparently, this is wrong. What am I missing here? any help would be much appreciated! :) thank you!!

Explanation / Answer

A) 238 = 234 + A hence A = 4 B0 92 = 90 + Z hence Z=2 C) 56 26 Fe+ 4 2 H-->60 29 Cu +0 -1 e is wrong becuase 4 2 H doesnt exist you may either write 4 2 He helium or 2(2 1 H) 2 molecles of hydrogen

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