solve this reaction: 5024cr+12 6c→2 10n + ?,

LET ME REWRITE THE EQUATION

⁵⁰₂₄Cr+¹₀n →?+ ¹²₆C + 2 ¹₀n  ?

 We can find out the missing atom by balancing the equation, therefore in a nuclear equation, the charge and the mass on the product and reactant side must be balanced

⁵⁰₂₄Cr+¹₀n →?+ ¹²₆C + 2 ¹₀n +  ³⁶ ₁₈Ar       

 the missing atom is argon-36