The isotope lead-204 is obtained.
Lead-208 is formed by alpha decay (emission of alpha particles) from polonium-212.
Polonium-210 become lead-206 after the emission of an alpha particle.
The reaction is:Po-216----------------alpha particle-----------------Pb-212
In this case alpha particles are emitted.
Alpha emission means that an alpha particle (2 protons + 2 neutrons) are emitted, so the original nucleus has 2 protons and 2 neutrons more.
Lead-208 is formed by alpha decay (emission of alpha particles) from polonium-212.
Polonium-210 become lead-206 after the emission of an alpha particle.
Polonium-218 undergoes alpha decay to form lead-214, which then undergoes beta decay to form bismuth-214.
Polonium is seated in the block numbered 84. As an alpha particle is emiited then the parent element is shifted to the block numbered 2 less right from the present one. So it gets shifted to 82. This is the place for lead Pb So Po, the parent gets changed to Pb. Mass number 218 will be reduced by 4. So the daught element would be 82 Pb 214 So the most general rule is that as alpha particle which is nothing but the helium nucleus comes out of the parent then daughter has two less in its atomic number and 4 less in its mass number as helium nucleus is 2He4
Alpha decay is the emission of an alpha particle, which consists of two protons and two neutrons. During alpha decay, the parent nucleus loses an alpha particle to become a different nucleus called the daughter product. The daughter product formed after alpha decay will have an atomic number that is two less and a mass number that is four less than the parent nucleus.
The daughter product that remains after the alpha decay of polonium-212 is lead-208. During alpha decay, polonium-212 loses an alpha particle, consisting of two protons and two neutrons, resulting in the transformation to lead-208.
Polonium-210 is an alpha emitter.
Radon-222 undergoes alpha decay to produce polonium-218as a daughter.
Polonium 210-----------alpha particles-----------Lead 206 Polonium 209-----------alpha particles-----------Lead 205 Polonium 208-----------alpha particles-----------Lead 204 Polonium 214-----------alpha particles-----------Lead 210 Polonium 218-----------alpha particles-----------Lead 214 (99,98 %) Polonium 218-----------beta particles------------Astatin 218 (o,o2 %) For other isotopes see the list at: http://en.wikipedia.org/wiki/Polonium#Isotopes
The density of alpha polonium is 9,196 g/cm3.
Radium and polonium are principally alpha emitters.
The density of alpha polonium is 9,196 g/cm3.