How do you find what is the atomic number of an element?

Answer 1

The atomic number is typically found directly above the atomic symbol of the element in the Periodic Table.

The atomic number, Z, should not be confused with the mass number, A, which is the total number of protons and neutrons in the nucleus of an atom. The number of neutrons, N, is known as the neutron number of the atom; thus, A = Z + N. Since protons and neutrons have approximately the same mass (and the mass of the electrons is negligible for many purposes), the Atomic Mass of an atom is roughly equal to A. Note that the atomic mass numberA of an atom, which is always an integer, is usually different from the atomic weight of a element, because (among other reasons) most elements consist of a mixture of stable atoms with the same Z ,but differing N (isotopes

This changes the formula from Z=n+A to Z=A-N. That is basic math with variables.

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Answer 2

I usually find it by looking at the periodic table.

"Count the protons" is probably the answer you're looking for, though.

The experimental method is to measure the radiation emitted when an element is used as the anodic target in an X-ray tube.

Answer 3

The atomic number of an element can be found on most any Periodic Table of Elements. The atomic number is found in the upper left hand corner of the element's square. The number represents the number of protons one atom of the element has.

Answer 4

There are a couple of ways you can find the atomic number of an atom. Firstly, it is the order of elements, you can see this when referring to a Table of Elements. Secondly, the atomic number is equal to the number of protons in the atoms nucleus.

Answer 5

To find the atomic number of an element, look it up in the Periodic Table, in the front of most any chemistry text book, or in the entry for the element in the Wikipedia. The atomic number is equal to the number of protons in the nucleus of the element.

Answer 6

The atomic number of an element is typically found on the periodic table as the number above or below the element's symbol, representing the number of protons in the nucleus of an atom of that element. Each element has a unique atomic number, making it a key identifier for elements.