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Because its a synthetic element.

The number that appears in brackets is the most stable isotope of technetium.

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โˆ™ 2010-09-21 04:50:50
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Q: On the technetium periodic table why is its relative atomic mass usually in brackets?
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In the periodic table why is the relative atomic mass of technetium usually in brackets?

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

Why is the atomic mass of technetium usually in brackets?

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

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

why is the atomic mass of technitium usually in brackets?

In the peridoic table why is technetium atomic mass number usually in brackets?

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.

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

because it is an isotope???

Is Technetium radioactive?

All isotopes of technetium are radioactive. Technetium is found only in trace quantities in nature, and then usually only in certain ores where it is a product of radioactive decay. All of the technetium used is synthetic.

Where could you find the element technetium in the world?

Usually only in a laboratory; technetium is an artificial element that does not occur in nature.

What do you use brackets for?

Usually, brackets are used to organize a league's playoff games.

What radioactive marker is used for salivary gland scans?

a low-level radioactive marker, usually technetium-99m or technetium pertechnetate.

What does the brackets stand for in math?

Brackets are a way of ordering the priority of operations. In mathematics, usually things with brackets have their operations completed first.

Are brackets in parenthesis or vise versa?

Parentheses are usually placed inside brackets.

When do you use parentheses and brackets?

The different types of brackets are:round brackets, open brackets or parentheses: ( )square brackets, closed brackets or box brackets: [ ]curly brackets, squiggly brackets, swirly brackets, braces, or chicken lips: { }angle brackets, diamond brackets, cone brackets or chevrons: < > or &#10216; &#10217;Parentheses (singular, parenthesis)---sometimes called round brackets, curved brackets, oval brackets, or just brackets, or, colloquially, parens --- contain material that could be omitted without destroying or altering the meaning of a sentence. Example: Sometimes I like to use parenthesis (they make everything more fun).Square brackets are mainly used to enclose explanatory or missing material usually added by someone other than the original author, usually in quoted text. Example: I appreciate it [the honor], but I must refuse.Curly brackets (also called braces, or "squiggly brackets") are sometimes used in prose to indicate a series of equal choices. Example: Select your animal {goat, sheep, cow, horse} and follow me.Angle brackets are often used to enclose highlighted material. Some dictionaries use angle brackets to enclose short excerpts illustrating the usage of words.An example can be:I used the brackets to mark off important information in my research paper.

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