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What should i know about
What should i know about
Light Emission by Electrons?
Light Emission by Electrons?
Each element emits a unique set of spectral lines. Elements can be identified by their unique line spectrum.
The movement of electrons forms the element's light emission spectrum.
The electron configuration of an element will allow for the prediction of chemical properties.
The number of valence electrons present in an atom can be determined by its location on the periodic table and/or a model of the electron configuration.
video resources
video resources
This video shows how to determine the number of valence electrons and draw Lewis Structures for main group elements starting from the electron configuration.
This video reviews electron configuration for d-block elements.
This video will teach you how to read Spectra from a mystery star.
Start the video around 4:49.
This video explains the excited and ground state of electtons.
This video provides a step-by-step description of how to write the electron configuration for elements using just the Periodic Table.
Just so We're Clear...
Just so We're Clear...
You can determine an element’s identity by the light emission spectrum.
Light is emitted while electrons return to the ground state after being excited.
The number of valence electrons can predict reactivity. The number of valence electrons can be determined by location and/or electron configuration.
Elements with the same number of valence electrons will have similar chemical properties.
Elements in the same group/family will have similar chemical properties.
In addition to these facts, you need to be able to identify and develop the electron configuration of an element.
Additional Resources
Additional Resources
This resource will provide an addtional opportunity to review absourption spectrum/emission lines
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