name three elements which has 2 electrons in the outermost shell
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elements that have twoelectrons in their outermost shells. (c)three elements with filled outermost shells. Answer: (a) (i) Lithium (ii) Sodium (iii) Potassium (b) (i) Beryllium (ii) Magnesium (c) (i) Helium (ii) Neon (iii) Argon.
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