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2023 Electrons Intro
Question | Answer |
---|---|
electron shell that holds a maximum of 2 electrons | 1st electron shell |
electron shell that holds a maximum of 8 electrons | 2nd electron shell |
innermost electrons closest to the nucleus | core electrons |
outermost electrons that determine chemical properties | valence electrons |
tells the number of ALL electrons | atomic number |
tells the number of electron shells | period number |
tells the number of valence electrons | group number |
is the sum of protons and neutrons | atomic mass number |
change in the number of electrons | ion |
region in space in the electron cloud where you are highly likely to find electrons | atomic orbital |
location in center of atom that has protons and neutrons | nucleus |
elements in groups 1, 2 , 13 - 17 | representative elements |
explains that electron pairs need to be as far apart as possible | VSEPR theory |
electrons have this charge | negative |