Electrons or atomic number. The atomic number is the number of protons as well as the principle quantum number.
The number of protons in an atom is equal to its atomic number.
In a neutral atom the number of protons is equal to the number of electrons. And by definition the atomic number of an atom is equal to the number of protons in it. So the atomic number of a neutral atom is equal to the number of protons or the number of electrons in the atom.
The number of protons in an atom is equal to its atomic number. In a neutral atom, the number of electrons is equal to that of protons. If the atom is negatively charged, add it to the number of electrons; and if positive, subtract.
The number of protons in an atom of an element is equal to the number of electrons in that atom which is equal to that element's atomic number.
The number of protons is equal to atomic number; in a neutral atom the number of electrons is also equal to the numbers of protons.
The number of protons in an atom is equal to its atomic number.
The atomic number is equal to the number of protons in the nucleus and in a neutral atom will also equal the number of electrons.
In a neutral atom the number of protons is equal to the number of electrons. And by definition the atomic number of an atom is equal to the number of protons in it. So the atomic number of a neutral atom is equal to the number of protons or the number of electrons in the atom.
The atomic number reflects the charge number of the nucleus. It is always equal to the number of protons found in the nucleus.
The number of protons in an atom is equal to its atomic number. In a neutral atom, the number of electrons is equal to that of protons. If the atom is negatively charged, add it to the number of electrons; and if positive, subtract.
In a neutral atom, the number of protons is always equal to the number of electrons.
The number of protons is identical to the number of electrons when an atom is in a neutral state.
No - in fact it is quite rare
The number of protons in an atom of an element is equal to the number of electrons in that atom which is equal to that element's atomic number.
Atomic number represents the number of protons in the nucleus.
The number of protons is equal to atomic number; in a neutral atom the number of electrons is also equal to the numbers of protons.
The atomic number is equal to the number of protons [note correct spelling!] in each nucleus of an atom.