It is the same as the number of protons if it is a neutral atom, or the number of protons plus the charge of the ion.
The number of protons is the atomic number of the element.
the atomic number.
The atomic number of the element is the number of protons, therefore there has to be the same amount of electrons to protons.
In a neutral atom the number of electrons is the same as the atomic number, which is the number of protons in the nucleus.
To find out the number of electrons in an element you must add the protons and neutrons and subtract that number with the atomic mass, this will determine the amount of electrons because the unknown element could be an isotope and have more than the normal amount of electrons of the non isotope element.
To find the total number of electrons in an element, first you need to look up the element's atomic number. That number tells you how many protons are in the element. Then, look up the net charge of the element. The number of protons subtracted by the elements net charge will give you the number of its electrons.
The number of valence electrons tell us the group number of that element.
Mass number..can be calculated..by the sum of No. of protons and the No. of electrons. And this would give you the the mass number of the element.
Who told you that chromium had 118 electrons - there are only 24. Check it out with Wikipedia. There you find the element that really has 118 electrons. Happy hunting. (PS - Hint - there is a very close correlation between the number of electrons and the atomic number of the element.)
Each element has a different number of electrons. All atoms of that element have the same number of electrons. The number of electrons is the same as the number of protons.
In a neutral atom, the number of electrons equals the number of protons. The number of protons is the atomic number of the element on the periodic table.
The atomic number of an element is the number of protons in its atoms. In a neutral atom, the number of protons equals the number of electrons.
Kr has the atomic number of 36. It has similar number of electrons and protons.
The number of electrons are equal to the number of protons which is equal to the atomic number. That's if you're trying to find the number of total electrons. If you want to find the number of valence electrons (electrons in the outermost shell) you must look at the group numbers. The group number is equivalent to the number of valence electrons.