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What is description of berkelium?
Berkelium is a synthetic radioactive element with the symbol Bk and atomic number 97. It is a member of the actinide series and is named after the city of Berkeley, California, where it was first discovered. Berkelium is primarily used for research purposes due to its radioactivity and limited availability.
What is the atomic number of ununnilium?
Ununnilium, now known as Copernicium, has an atomic number of 112. It is a highly radioactive synthetic element that was first synthesized in 1996.
How are the elements with atomic numbers 43 and 61 are unique?
The element with atomic numbers 43 (Technetium) and 61 (Promethium) are unique because they are the only radioactive elements before the start of the bulk of the radioactive elements. The bulk of the radioactive elements begins at atomic number 84 (Polonium). These are significant as they aren't primordial and are only found due to radioactive decay.
Was polonium the first source of radioactivity?
Yes, polonium was one of the first elements discovered to exhibit radioactivity. It was discovered by Marie Curie and her husband Pierre Curie in 1898, leading to their pioneering research on radioactivity.
Which element is Atomic number- 112?
The element with an atomic number of 112 is called Copernicium. It is a synthetic, radioactive element that can only occur in a laboratory.
What is the average atomic mass of an element is the average atomic masses of what kind of isotopes?
average atomic massof an element=(Atomic mass of first isotope X % of that isotope) + (Atomic mass of second isotope X % of the second isotope)
What is the first radioactive element number?
Of elements that have no stable isotopes, technetium has the lowest atomic number, which is 43.
Why radioactive decay is always first order reaction?
This is because only one isotope decay.
When did the atomic number first appear on the periodic table?
The first atomic number appeared on the periodic table in August 1982. The first atom of the element meitnerium had the atomic number 109. The isotope of element 109 has an atomic mass of 266.
First element known to be radioactive?
Uranium is the first element known to be radioactive. It was discovered by Henri Becquerel in 1896.
What is the mass number of the first nitrogen isotope?
Nitrogen is a non metal element. Atomic mass number of it is 14.
What is description of berkelium?
Berkelium is a synthetic radioactive element with the symbol Bk and atomic number 97. It is a member of the actinide series and is named after the city of Berkeley, California, where it was first discovered. Berkelium is primarily used for research purposes due to its radioactivity and limited availability.
Calculate the average atomic mass of an unknown element that has two naturally-occurring isotopes The first isotope occurs 75.47 percent of the time and has a mass of 248.7 amu The second isotope occu?
To calculate the average atomic mass, multiply the mass of each isotope by its natural abundance (expressed as a decimal), then add the results together. For the unknown element: Average atomic mass = (0.7547 * 248.7 amu) + (0.2453 * x) Given the only known isotope mass is 248.7 amu, you'll have to provide the mass of the second isotope to determine the average atomic mass.
What is the first radioactive element that forms when uranium 238 decays?
The first radioactive element formed when uranium-238 decays is thorium-234. Uranium-238 undergoes alpha decay to form thorium-234.
What is the atomic number of ununnilium?
Ununnilium, now known as Copernicium, has an atomic number of 112. It is a highly radioactive synthetic element that was first synthesized in 1996.
What is the decay element of uranium?
It is not yet discovered since all of the uranium isotopes are having half life for several millions of years. We would be able to find it after atleast 700 millions of years.
How are the elements with atomic numbers 43 and 61 are unique?
The element with atomic numbers 43 (Technetium) and 61 (Promethium) are unique because they are the only radioactive elements before the start of the bulk of the radioactive elements. The bulk of the radioactive elements begins at atomic number 84 (Polonium). These are significant as they aren't primordial and are only found due to radioactive decay.
