The atomic number is determined by the number of protons, which are located in the nucleus.
The number of protons in the nucleus of an element gives that element its ATOMIC NUMBER.
Protons.The atomic number of an atom is the number of protons in the atom. The identity of an atom is based on its atomic number, so a change in the number of protons mean an atom has turned into a different element. However, an addition or subtraction of neutrons creates different isotopes of an element, and a change in the number of electrons creates an ion of the element.
There is no individual sub-atomic particle that is responsible for the identity of an element. It is the way the electrons, protons and (neutrons) are arranged in an element that gives it it's identity.
An atomic number goes with a single element notto a combination of elements.
The atomic number on the periodic table is the number of protons for the element.
proton
The number of protons is unique for every element.Varying the number of neutrons will give you an isotope of the same element.Varying the number of electrons will give you an ion of the same element.
An element's atomic number gives its number of protons. Lutetium's atomic number is 71. Thus, it has 71 protons.
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An element's atomic number gives it number of protons. Sulfur's atomic number is 16. Thus, it has 16 protons.
An element's atomic number gives its number of protons. Checking the periodic table, we see that molybdenum is the element with the atomic number of 42. Thus molybdenum has 42 protons in its nucleus.
The atomic number of the element refers to the number of protons of an atom: all atoms of an element have this number of protons. A neutral atom of the element will have the same number of electrons.