The atomic number is equal to the number of protons in the nucleus, and for neutral atoms, it is the same as the number of electrons. In an attempt to keep atoms and ions from getting confused with one another, it is best to think of atoms as always being electrically neutral and ions should be considered charged positively or negatively depending on whether electrons are gained or lost by an atom during the chemical combination of atoms in forming substances such as water, salt and rust found on metals. Protons in atoms and ions are always the same for a specific atom.
Every element has a unique atomic number, and so each element's identity is determined by the number of protons in its nucleus.
However, the same element can have different numbers of neutrons in its nucleus. Two atoms of the same element with two different numbers of neutrons in the nucleus are called isotopes. Also, note that if an atom is not charged (neutral), then the number of protons must equal the number of electrons, and so the atomic number is also equal to the number of electrons in a neutral atom of each element.
However, if the atom is charged (and therefore called an ion), it will have a different number of electrons orbiting it. If the number of electrons is less than the number of protons, it will be a positively charged ion, and the charge will equal the difference between the number of electrons and protons. The same is true if it has more electrons than protons, except now the charge will be negative.
Look under the Web Links below this answer for a Periodic Table. The number listed for each element is its atomic number. Also see the Related Questions links for more information about the number of protons, neutrons, and electrons in an atom.
The atomic number. That is the bottom number in standard notation, the top one on the periodic table.
Standard Notation: 2 4He Two would be the number of protons. The numbers are flipped on the periodic table.
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The number of protons in an atom is what makes an element what it is. Hydrogen has 1 proton, helium has 2 protons, lithium has 3 and so on.
the big number the element has (on the periodic table of elements)
yes, the atomic number represents the number of protons in a particular element.
yes its also the same amount of electrons
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 that the element has.
You would have to give me number to compare but I would say the one with the higher atomic number. The atomic number is the number of protons in the nucleus, so I would assume that the more protons an atom has, the more reactive it is. like with a magnet, if you have two or three magnets, they will be reactive, but if you have seven or eight, they will be much MORE reactive. Hope this helps!
If it has 23 protons it has to be Vanadium no matter the number of neutrons. Deciding what element an atom is depends solely on the number of protons. However, the neutrons tell you which isotope of vanadium it is.
It tells you the number of cations in the outer energy level of the element's atomic mass
The atomic number is the number of protons in an atom's nucleus.
the atomic number is the number of protons/electrons in the atom
the atomic number is the number of protons/electrons in the atom
Atomic number = Number of protons
Atomic number = Number of protons
Tell you the number of protons and electrons in an atom
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 number of protons in the nucleus of an atom tell you which element you are dealing with. It is the number of protons in an atomic nucleus that determines the elemental identity. Only that. The atomic number of an element is the number of protons you will find in the nucleus of every atom of that element, regardless of the number of neutrons or electrons involved.
No. of protons in the atom.
We use atomic number for recognize chemical elements. atomic number means, how many protons are there in a single atom.
The atomic number tells you how many protons and electrons are in a specific element.Atomic number tells us about protons. Number of protons that atom contains.
The atomic number is the number of protons that the element has.