Electronic configuration

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Presentation transcript:

Electronic configuration Why am I so negative!!!!

Electronic configuration ASPG7.4.1.2.2 students will differentiate between atomic mass and atomic number and explain the relationship of the atomic number, the number of protons and the element’s identity. Learning objectives: By the end of the lesson students should be able to: State that electrons are found in shells around the nucleus Understand that each shell can hold up to a certain number of electrons Draw and write the electronic configuration of the first 20 elements

Electronic configuration Recap: What charge does an electron have? Where are electrons found in an atom?

Representing an electron OR X

Electron Arrangement We can find out the number of electrons in each atom from the PERIODIC TABLE

Electron arrangement example Sodium(Na) has 11 electrons Draw and write the electronic configuration of sodium.

Electron arrangement examples

H Use the following sheet to draw AND write the electron configuration for the first 20 elements. He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca

Plenary: Tweet it Write a tweet about what you have learnt in today's lesson (no more than 140 characters)