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Atomic number


In chemistry and physics, the atomic number of a chemical element is the number of protons found in the nucleus of an atom of that element, and therefore ...

Atomic Number and Mass Number - NDE/NDT Resource Center


The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how ...

Questions and Answers - How do I find the number of protons ...


An answer to the question: Instructions on how to calculate the number of protons , electrons and neutrons in an atom of any element.

Atomic number, mass number, and isotopes | Khan Academy


Sep 5, 2014 ... How to use the atomic number and the mass number to represent different isotopes.

The chemical elements of the periodic table sorted by atomic number


Chemical elements listed by atomic number. The elemenents of the periodic table sorted by atomic number. click on any element's name for further chemical ...

Atomic Number Definition - Chemistry Glossary - About.com


Atomic number identifies each element. This is the definition of an element's atomic number.

Atomic number | Define Atomic number at Dictionary.com


Atomic number definition, the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons ...

atomic number - Infoplease


atomic number, often represented by the symbol Z, the number of protons in the nucleus of an atom, as well as the number of electrons in the neutral atom.

BBC - GCSE Bitesize: Atomic number and mass number


A secondary school revision resource for AQA GCSE Chemistry about atoms and elements, including atomic number, mass number, atomic structure and ...

Atomic Number and Mass Number - Video & Lesson Transcript ...


Atoms are the basic building blocks of everything around you. In order to really understand how atoms combine to form molecules, it's necessary to...

Atomic Numbers
The atomic number, as denoted on the periodic table, refers to the number of protons in a single atom of that particular element. Learn more about the organization of the periodic table with important facts from a science teacher in this free video on... More »
Difficulty: Moderate
Source: www.ehow.com
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Glossary Term - Atomic Number - Science Education at Jefferson Lab


The atomic number is equal to the number of protons in an atom's nucleus. The atomic number determines which element an atom is. For example, any atom ...

Atomic number, atomic mass, and isotopes | Elements and atoms ...


Fundamental properties of atoms—including atomic number and atomic mass— and how atoms come in different isotopes.

Chemical Elements.com - Atomic Number


An up-to-date periodic table with detailed but easy to understand information.