Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Atoms by Element
Document related concepts
Transcript
Atoms by Element An atom’s atomic number is the number of protons in its nucleus. Usually an atom has the same number of protons as electrons. The number of neutrons can be different. The electrons form shells around the nucleus of the atom. Each shell holds a specific number of electrons. Use the diagram to guide you as you place the correct number of protons, neutrons, and electrons on each atom illustration. 1st shell - holds up to 2 electrons 2nd shell - holds up to 8 electrons 3rd shell - holds up to 18 electrons Carbon Oxygen Iron Aluminum Nitrogen Calcium
