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Probably because technetium does not occur naturally; all its isotopes are radioactive with short half-lives compared with naturally occurring radioactive elements such as uranium.

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โˆ™ 2010-01-14 20:15:38
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Q: In the peridoic table why is technetium atomic mass number usually in brackets?
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Related questions

Why is the atomic mass of technetium usually in brackets?

The standardized atomic weight of technetium is [98] amu.


On the technetium periodic table why is its relative atomic mass usually in brackets?

Because its a synthetic element. The number that appears in brackets is the most stable isotope of technetium.


In the periodic table why is the relative atomic mass of technetium usually in brackets?

Because its a Synthetic Element!!!!!!!!


Why is technetiums relative mass usually found in brackets on the period table?

why is the atomic mass of technitium usually in brackets?


What is the atomic mass of technetium?

The standardized atomic weight of technetium is [98].


What is the atomic weight of technetium?

Technetium (Tc) has an atomic weight of 98.9063g/mol


What is the attomic number for technetium?

The atomic number of Technetium is 43.


Why does technetium have its relative atomic mass in brackets?

The brackets are used for isotopic elements--those with variable numbers of neutrons. The atomic weight of the most stable isotope is the one in brackets. You know, this is a terrible way to be getting your chemistry coursework done. Here you go: www.lenntech.com/periodic-chart-elements/tc-en.htm There you go.


What is the number and charge of technetium?

The atomic number of technetium is 43; the atom is neutral.


What is the symbol for Technetium on the periodic table?

Technetium has the symbol of Tc. It has the atomic number of 43.


Why is technetiums relative atomic mass usually found in brackets on the period table?

because it is an isotope???


What year was technetium discovered?

Technetium was discovered in 1937 by Carlo Perrier and Emilio Segre. Technetium has the symbol Tc and the atomic number 43.

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