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Chemistry - Electronic Structure and Isotopes - Coggle Diagram
Chemistry - Electronic Structure and Isotopes
Electronic Structure
Electron Shell rules
lowest energy levels filled first
only certain number of electrons in each shell
1st shell
2 electrons
2nd shell
8 electrons
3rd shell
8 electrons
electrons always occupy shells (energy levels)
Isotopes
Atoms of elements with the same number of protons but different number of neutrons
Same atomic number but different mass numbers
many elements - many different isotopes
Relative Atomic Mass used to refer to whole element
Average mass of all isotopes that make up element
RAM
(%isotope abundance x isotope mass number) + (%isotope abundance x isotope mass number)
/100