pls answer this chemistry question
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a.
Hydrogen (H), lithium (Li), and sodium (Na), as group 1 elements, have just one electron in their outermost shells.
b.
He, Ne, Ar are three elements with eight electrons in their outermost shells
c.
lithium, pottasium and sodium
d.
beryllium, magnesium, calcium,
e.
Chlorine, Bromine, Fluorine
f.
Helium, Argon, Radon
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