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1. 1 To 20 Atomic Number
2. First 10 Periodic Table

Here is a list of the elements sorted by atomic number.

1 To 20 Atomic Number

Chemical elements listed by atomic number The elements of the periodic table sorted by atomic number. Click on any elements name for further chemical properties, environmental data or health effects. This list contains the 118 elements of chemistry. The atomic number (represented by the letter Z) of an element is the number of protons in the nucleus of each atom of that element.An atom can be classified as a particular element based solely on its atomic number. For example, any atom with an atomic number of 8 (its nucleus contains 8 protons) is an oxygen atom, and any atom with a different number of protons would be a. Now you know that atomic number = number of protons, and mass number = number of protons + number of neutrons. To find the number of neutrons in an element, subtract the atomic number from the mass number. Here are a couple example: A single helium (He) atom has a mass number of 4 and an atomic number of 2. It must have 4 - 2 = 2 neutrons. Electron Configuration (Elements 1-20) The full lesson can be viewed by enrolling in the Year 9 Chemistry Online Course or by purchasing the Year 9 Chemistry Lesson Notes. Learning Objective In this lesson we will learn how electrons are arranged Read More.

First 10 Periodic Table