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In the Periodic Table, numbers are not usually placed AFTER the symbol, but to the left and above and below. However, if the number appears AFTER the symbol, it usually tells you the Atomic Mass of the element. An example might be C-12 which refers to the isotope of carbon that has 12 protons and 12 electrons, and has an atomic mass of 12 amu.

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Q: What do you call the little number after the atomic symbol?
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What do you call the number that tells an element's location on the periodic table of elements?

Atomic number and it also tells the number of protons and electrons in an atom it is on top of the element symbol.


What do you call the several different forms of an element having different atomic mass and number of neutrons?

We call these different "flavors" of an element the isotopes of that element.


Why is the atomic number used to identify atoms instead of atomic mass?

Atomic Number is the number of protons in the nucleus. It is also the number of electrons the atom has. It is the number of electrons that determines the chemical behavoir of the atom. Mass number is the number of Protons and Neutrons the nucleus has. Neutrons have no effect on the electron number and therefore on the atom's chemical behavoir. So atoms with the same Atomic Number and different Mass Number all have the same chemical properties. This then is a usefull way to define an "element". Atoms with different Atomic Numbers will have very different chemical properties, regardless if their Mass Numbers are equal or not so it would not be very usefull to call two atoms with different chemical properties the same element.


What is a word for the number of neutrons plus protons in the nucleus of an atom?

you call it a proton you scince geek! heather


What do you call atoms of the same element with different atomic masses?

They are called isotopes. They have different mass nmbers because they have a different number of neutrons.

Related questions

What do you call the number that tells an element's location on the periodic table of elements?

Atomic number and it also tells the number of protons and electrons in an atom it is on top of the element symbol.


What do you call the letter or group of letters that represents an element?

It would be called an atomic/chemical symbol.


How many protons and neutrons are in the nucleus of the atom?

No it is not the atomic number. We call it mass number.


Droid How do you answer a call?

When you receive a call, at the bottom left-hand corner of the screen, there is a little green phone symbol. Touch that symbol and drag it to the right. Then your call will be answered.


What do you call the number under the square root symbol?

The radicand.


What did you call the atomic bomb that was drop over Hiroshima?

The bomb was code-named "Little Boy."


What is the name for the number of protons and neutrons in an atom?

The number of protons in a nucleus of an atom is called the "proton number", strangely enough. If you are a physicist, you will most likely prefer this term. Chemists however, would rather call it "atomic number".


What are the elements that are one atomic number above one one atomic number below your element?

For now I can't recall, except that this ?'n HAS a Valid Answer ... Help Call.


A table of elements that organizes the elements by atomic number and properties?

Chemists call this the periodic table of elements.


What do you call the several different forms of an element having different atomic mass and number of neutrons?

We call these different "flavors" of an element the isotopes of that element.


What did they call the atomic bomb in World War II?

hiroshima's bomb was called 'little boy' and nagasaki's was called 'fat man'


Why did people call the atomic bombs fat man and little boy from the hiroshima and Nagasaki?

To give a nice name to a bad thing.