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203. californium-249  +  nitrogen-15  --->   4n +  X           What is X?
     
A. 260Md 249Cf98  +  15N7  --->   4  1N0  +   260Db105  

Sum of Mass Numbers must be constant
Sum of Atomic Numbers must be constant

Atomic Number should be on the left side but that are formatting problems.

The Correct Answer is  D.
B. 264Md
C. 260Db
D. 264Db

 

   

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