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.
Yes, all carbon atoms have the same atomic number, and that is 6.
Yes, and in order to find the Number of Neutrons, subtract Atomic Mass from Number Of Protons, the result will be the Number of Neutrons for that atom *No. Of Neutron=Atomic Mass - Number Of Protons
Nope, the atomic number is equal to the number of protons.
yes. Isotopes of an element have the same number of protons, thus electorns, thus the same chemical properties. Where isotpes differ is in the number of neutrons. Consider hydrogen, atomic number 1, atomic weight 1, 1 proton, 1 electron vs duterium, atomic number 1 atomic weight 2, 1 proton, 1 electron, 1 neutron. H2O = water D2O = heavy water
by the atomic number.
The atomic number.
- Atomic number is equal to the number of protons - Atomic number is equal to the number of electrons (in a neutral atom) - Atomic number is the number of a chemical element in the periodic table of Mendeleev
atomic number
The atomic number of an element is unique to that element. The atomic number is equal to the amount of electrons in one atom of that element. As each element categorically has it's own amount of electrons, you can identify an element from this number.
how do you find the atomic number for an element?
The atomic number is equal to the number of protons.
Yes, the number of protons is always used to identify an element. This is also known as its atomic number.
Atomic Mass minus atomic number
the number of protons in an atoms nucleus is called atomic number
The number of protons in the atomic nucleus is equal to atomic number.
Atomic number is the number of protons in the atomic nuclei of the atoms of an element.
Protons.