# protons = atomic number.
25 protons 25 electrons normally 30 neutrons but it can vary between 21 and 40.
The number of protons in an atom is different for every element. If you look at the periodic table, then the number labeled "atomic number" is the number of protons.
It is equal to the atomic number. Elements are arranged according to atomic number in periodic table
valence electrons is the same as the number as the last digit in the group :)
It has 31 electrons. The easiest way to find an electron is that the atomic number tells you how many protons and electrons on the periodic table. It will change if the element is an ion which will gain or lose an electron.
a modern periodic table should have the 118 elements, their atomic numbers, and their masses. to find the number of protons and electrons, they are the same as the atomic number. to find the neutrons, subtract the protons from the mass.
The Periodic Table tells you how many protons are in an atom by their Elemental Number. In other words, yes, the Periodic Table tells you how many protons are in an atom.
find #26 on the periodic table, Fe, iron
Atomic number is equal to number of protons.
Look it up in "periodic table of elements" You can find the number of a particular element by looking at the Periodic Table; you can also do this by counting the number of protons in the nucleus.
There are 11 protons and 12 neutrons. And that does not depend on the periodic table. Sodium had 11 protons and 12 neutrons long before the periodic table, or even human, beings existed!
look at the periodic table and find its atomic number that is the number of protons and electron because their values are the same
Oxygen has 8 protons. The number of protons tell you which number the atom is in the periodic table, so you can just look at the periodic table and the element's number to find out how many protons it has.
periodic number Z: the number of protons
The number of protons is always the same as the atomic number. If you have a periodic table, then you will always know how many protons are in each element.
The periodic table organizes the elements by atomic number (number of nuclear protons).
36 protons = atomic number 36 = noble gas Krypton Kr