When protactinium-229 goes through two alpha decays, francium-221 is formed. Write the nuclear equation for this.
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Step 1
An alpha particle is essentially a helium nucleus, so it has 2 protons and 2 neutrons, or a mass number of 4 and an atomic number of 2. Pa-229 will lose 2 protons and 2 neutrons, becoming actinium-225 (Ac-225). The nuclear equation for this first decay Show more…
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