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The [[ammeter]] in the [[circuit]] is connected to an alarm which goes off when there is no [[Electrical Current|current]].
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===Equation===
<math>{}_Z^AX \rightarrow {}_{Z-2}^{A-4}Y + {}_2^4\alpha</math>
<math>{}_{92}^{238}U \rightarrow {}_{90}^{234}Th + {}_2^4\alpha</math>
====Example Calculations====
{| class="wikitable"
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| 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>{}_{84}^{210}Po \rightarrow {}_{Z}^{A}X + {}_2^4\alpha</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 {}_{86}^{222}Rn + {}_2^4\alpha</math>
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| 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.'''
210 = A + 4
A = 206
| 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 = 222 + 4
A = 226
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| 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.'''
84 = Z + 2
Z = 82
| 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 = 86 + 2
Z = 88
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| style="height:20px; width:300px; text-align:left;" |'''3. Since the [[Relative Atomic Charge|relative atomic charge]] is the same as the [[Atomic Number|atomic number]] look up the [[element]] on the [[Periodic Table|periodic table]].'''
<math>{}_{82}^{206}Pb</math>
| style="height:20px; width:300px; text-align:left;" |'''3. Since the [[Relative Atomic Charge|relative atomic charge]] is the same as the [[Atomic Number|atomic number]] look up the [[element]] on the [[Periodic Table|periodic table]].'''
<math>{}_{88}^{226}Ra</math>
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