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.
Atomic number and it also tells the number of protons and electrons in an atom it is on top of the element symbol.
We call these different "flavors" of an element the isotopes of that element.
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.
you call it a proton you scince geek! heather
They are called isotopes. They have different mass nmbers because they have a different number of neutrons.
Atomic number and it also tells the number of protons and electrons in an atom it is on top of the element symbol.
It would be called an atomic/chemical symbol.
No it is not the atomic number. We call it mass number.
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.
The radicand.
The bomb was code-named "Little Boy."
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".
For now I can't recall, except that this ?'n HAS a Valid Answer ... Help Call.
Chemists call this the periodic table of elements.
We call these different "flavors" of an element the isotopes of that element.
hiroshima's bomb was called 'little boy' and nagasaki's was called 'fat man'
To give a nice name to a bad thing.