# Step 2 calculate the atomic number z and atomic mass

• JusticeIce1840
• 486

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Step 2 : Calculate the atomic number (Z) and atomic mass number (A) of the element that is formed. Z = 95 4 = 91 A = 241 4 = 237 Step 3 : Refer to the periodic table to see which element has the atomic number that you have calculated. The element that has Z = 91 is Protactinium (Pa). Step 4 : Write the symbol for the element that has formed as a result of radioactive decay. 237 91 Pa Step 5 : Write an equation for the decay process. 241 95 Pb 237 91 Pa + 2 protons + 2 neutrons Activity :: Discussion : Radiation In groups of 3-4, discuss the following questions: Which of the three types of radiation is most dangerous to living creatures (including humans!) 111

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• Fall '10
• ALLISON

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