The atomic number is equal to the number of protons [or electrons, since P and E are also equal]
So the answer is 3
The atomic number of an atom is equivalent to the number of protons in its nucleus.
The number of protons is the atomic number.
The atomic number of an atom is determined by the number of protons it has.
The atomic number is determined by the number of protons in an atom. Therefore, if an atom has 65 protons, its atomic number is 65.
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.
The number of protons in an atom is its atomic number.
The number of protons in a nucleus of an atom constitutes the proton number or atomic number of that element and is denoted as Z. For example, helium has atomic mass of 4 and atomic number of 2, thereby having two protons.
The number of protons in an atom is equal to its atomic number.
The number of protons is identical to the number of electrons when an atom is in a neutral state.
16 The atomic number of an element is always the same as the number of protons in an atom of the element.
The atomic number is the number of protons in the atom. In the case of a neutral atom (as opposed to an ion), the atomic number is also equal to the total number of electrons.
The atomic number IS the number of protons in the atom's nucleus.