On the periodical table of elements, there are atomic numbers for each element. What is there relevence? How do you calculate them?
2006-12-02 05:26:03 · 15 answers · asked by Some Science Author 1 in Science & Mathematics ➔ Chemistry
In chemistry and physics, the atomic number (Z) (also known as the proton number) is the number of protons found in the nucleus of an atom. In an atom of neutral charge, the number of electrons also equals the atomic number.
2006-12-02 05:35:09 · answer #1 · answered by psionyxau 2 · 0⤊ 0⤋
Atomic Numbers, which are also known as the proton number, is the number of protons found in the nucleus of an atom. In an atom of neutral charge, the number of electrons also equals the atomic number. The atomic number originally meant the number of an element's place in the periodic table. The atomic number determines which element an atom is. For example, any atom that contains exactly 47 protons in its nucleus is an atom of silver.
Atomic # is = to the # of Protons
2006-12-02 05:37:08 · answer #2 · answered by dirkpt 1 · 1⤊ 0⤋
Hi!
That is a great question. The atomic number of an element is the number of protons that element contains. I assume that you would be aware of the fact that an atom contains a nucleus and electrons surrounding it. The nucleus contains sub-nuclear particles called protons (+vely charged) and neutrons (neutral). It is this 'number of protons' that we call as the atomic number of each element. For example, Hydrogen has one proton and has the atomic number 1, sodium has eleven protons and has atomic number 11. Hope this is clear enough. :)
2006-12-03 05:32:18 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The atomic number of an element is determined by the total number of protons and electrons in the nucleus of an atom.
2006-12-02 10:17:21 · answer #4 · answered by Lewis M 3 · 0⤊ 0⤋
The atomic number is the number of protons in an atom
2006-12-02 17:43:37 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Atomi number of thew element is the total number of protons in that atom. to calculate just count the no. of protons.
At.no. doesn't change when the electrons r gained or lost.
Protons +
Electrons -
2006-12-02 08:28:29 · answer #6 · answered by Anonymous · 0⤊ 0⤋
its deffinetly the number of protons in the atom. Because in a stable atom the number of protons, which are positively charged, and the number of electrons, which are negatively charged, are equal (makeing it neutral), the atomic number can also represent the number of electrons. But by deffinition, it is the number of protons
2006-12-02 07:19:09 · answer #7 · answered by sweapea009 1 · 0⤊ 0⤋
you do not calculate the number but it is done for us by people who 'see' into the element & number the atoms (ergo, atomic weight). new & different elements are being discovered every day so sit back & wait. want to join those who do such things? physics people are always on the lookout for new & exciting blood to join their ranks. who knows? you might discover a new element & have the pleasure of naming it after yourself. neat, eh?
2006-12-02 06:34:33 · answer #8 · answered by blackjack432001 6 · 0⤊ 0⤋
the atomic number of an element represents the number of protons, neutrons and electrons that the element has.
They calculates them trhough experiments.
2006-12-02 05:29:16 · answer #9 · answered by josh 2 · 0⤊ 1⤋
The atomic number is always the number of protons.
IF the atom is NEUTRAL it is also the number of electrons
It is RARELY the same as the neutrons.
2006-12-02 05:32:34 · answer #10 · answered by The Old Professor 5 · 0⤊ 0⤋