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Astatine is an extremely rare element - the rarest, very difficult to be identified in natural products; astatine was discovered first time by nuclear reactions between bismuth and high energy alpha particles in 1940 and in 1943 was discovered between the decay products of uaranium, actinium and thorium series.
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Why did it take sixty years longer to discover astatine than all the other halogens?
1. Astatine is an extremely rare chemical element, very difficult to identify in minerals. 2. The preparation of artificial astatine was dependent on the progress in nuclear physics and technology.
How long did it take to discover phtosynthesis?
200 years
How long does it take to travel 39.20 miles at 65 mpr?
Very very long because it would take me years to discover what speed 65 mpr represented!Very very long because it would take me years to discover what speed 65 mpr represented!Very very long because it would take me years to discover what speed 65 mpr represented!Very very long because it would take me years to discover what speed 65 mpr represented!
How long did it take for Lief Ericson to discover?
3 years(:
How long did it take to discover the cause of Concorde's crash?
28 years
Why did it take scientists nearly another eighty years more to discover francium?
The total amount of the francium in the Earth crust is approx. 30 grams.
Why did it take longer to find astatine then any other of the halogens?
1. Astatine is an extremely rare chemical element, very difficult to identify in minerals. 2. The preparation of artificial astatine was dependent on the progress in nuclear physics and technology.
How long did it take to discover polonium?
Polonium was discovered during the years 1897-1898.
Who did it take eight years and more than 10000 pea plants to discover the laws of inheritance?
It took Gregor Mendel eight years and over 10,000 pea plants to discover the laws of inheritance. Mendel's experiments with pea plants laid the foundation for modern genetics.
Why did it take so long for astatine?
Astatine is an extremely rare element - the rarest, very difficult to be identified in natural products; astatine was discovered first time by nuclear reactions between bismuth and high energy alpha particles in 1940 and in 1943 was discovered between the decay products of uaranium, actinium and thorium series.
Why did it take the scientists nearly 80 years to discover francium?
The total amount of the francium in the Earth crust is approx. 30 grams.
Why did Lewis and Clark take separate routes?
By splitting up they were able to see much more of the territory and to discover more plants and animals.
