7% of 210 = 14.7 = 7% * 210 = 7%/100% * 210 = 0.07 * 210 = 14.7
65% of 210 = 65% * 210 = 0.65 * 210 = 136.5
5% of 210 = 5% * 210 = 0.05 * 210 = 10.5
60% of 210= 60% * 210= 0.6 * 210= 126
40% of 210= 40% * 210= 0.4 * 210= 84
isotopes
Lead-210 (Pb-210) is an isotope of lead where the atoms have 3 more neutrons than lead-207, which is the most common version of lead.
Polonium-210 become lead-206 after the emission of an alpha particle.
Lead-210 is a naturally occurring radioactive isotope found in trace amounts in the environment. Its abundance can vary depending on the specific location and source of measurement. Lead-210 is often used in environmental studies and dating techniques due to its decay properties.
bismuth 210 decays by beta decay to polonium 210 that decays by alpha decay to lead 206
An alpha and a beta emission
Polonium-210 decay to lead-206.
Lead-212 is radioactive and emits alpha particles upon decay.Experiments have shown that it may be useful intheradioimmunotherapy of certain cancers.
Polonium-210 lose an alpha particle and become lead-206.
Although Mercury can be found in fish and shellfish the two radionuclides which concentrate in seafood are Lead-210 and Polonium-210. (Source: FEMA Radiological Emergency Management Course IS-3)
Number of neutrons = Mass number - atomic number = 210 - 82 = 128
By alpha decay polonium-214 is transformed in lead-210. Po-214--------------alpha--------------Pb-210