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:*Aim the source away from any living [[organism]] - to prevent [[irradiation]].
:*Store the source in a sealed [[Lead]] container - to prevent [[Radioactive Contamination|contamination]] and [[irradiation]].
===Equation===
<math>{}_Z^AX \rightarrow {}_Z^AX + {}_0^0\gamma</math>
<math>{}_{42}^{99}Mo \rightarrow {}_{42}^{99}Mo + {}_0^0\gamma</math>
====Example Calculations====
{| class="wikitable"
|-
| style="height:20px; width:300px; text-align:center;" |'''Find the [[element]] 'X' and calculate its [[Relative Atomic Mass|relative atomic mass]] 'A' and its [[Relative Atomic Charge|relative atomic charge]] 'Z'.'''
<math>{}_{90}^{231}Th \rightarrow {}_{Z}^{A}X + {}_0^0\gamma</math>
| style="height:20px; width:300px; text-align:center;" |'''Find the [[element]] 'X' and calculate its [[Relative Atomic Mass|relative atomic mass]] 'A' and its [[Relative Atomic Charge|relative atomic charge]] 'Z'.'''
<math>{}_{Z}^{A}X \rightarrow {}_{77}^{192}Ir + {}_0^0\gamma</math>
|-
| style="height:20px; width:300px; text-align:left;" |'''1. Calculate the [[Relative Atomic Mass|relative atomic mass]] by looking at the top row of numbers.'''
231 = A + 0
A = 231
| style="height:20px; width:300px; text-align:left;" |'''1. Calculate the [[Relative Atomic Mass|relative atomic mass]] by looking at the top row of numbers.'''
A = 192 + 0
A = 192
|-
| style="height:20px; width:300px; text-align:left;" |'''2. Calculate the [[Relative Atomic Charge|relative atomic charge]] by looking at the bottom row of numbers.'''
90 = Z + 0
Z = 90
| style="height:20px; width:300px; text-align:left;" |'''2. Calculate the [[Relative Atomic Charge|relative atomic charge]] by looking at the bottom row of numbers.'''
Z = 77 + 0
Z = 77
|-
| style="height:20px; width:300px; text-align:left;" |'''3. It's the same [[element]].'''
<math>{}_{90}^{231}Th</math>
| style="height:20px; width:300px; text-align:left;" |'''3. It's the same [[element]].'''
<math>{}_{77}^{192}Ir</math>
|}