| 41. | The radioactive element polonium-210 is also known to occur in tobacco smoke.
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| 42. | Whether polonium is ductile or brittle is unclear.
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| 43. | Polonium shows nonmetallic character in its halides, and by the existence of polonides.
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| 44. | The short-lived polonium decays with a half-life of 138 days.
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| 45. | This meant that less polonium would be required.
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| 46. | They named the element polonium, after Marie's native country of Poland.
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| 47. | The best-known neutron sources were radium-beryllium and polonium-beryllium.
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| 48. | Use of polonium for the neutron initiator was proposed in 1944 by Edward Condon.
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| 49. | The halo radius of damage is different for each of the different polonium isotopes.
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| 50. | What I didn't check was exactly which isotope of Polonium you get.
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