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Chemistry 9 Online
OpenStudy (aripotta):

.-.

OpenStudy (anonymous):

Fluorine is in group seven, hence seven outer electrons

OpenStudy (anonymous):

2s2 + 2p5 = 2+5=7

OpenStudy (nincompoop):

OpenStudy (aripotta):

wat. SORCERY

OpenStudy (anonymous):

Just remember that looking up the group (almost) only works for elements up to about atomic number 20

OpenStudy (aripotta):

i don't think so. thanks again :]

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