An element has 18 electrons in the outer most shell. The element is (A) Transition metal(B) Rare earth metal(C) Alkaline earth metal(D) Alkali metal

An element has 18 electrons in the outer most shell. The element is

1.	An element has 18 electrons in the outer most shell. The element is (A) Transition metal(B) Rare earth metal(C) Alkaline earth metal(D) Alkali metal
Answer» You MIGHT even claim that krypton has 18 electrons in its shell, but that's terribly misleading. It has 8 electrons in its outermost shell, and 18 electrons in its next-inner shell. Ditto again in the fifth PERIOD, where the 5S orbitals fill, then 4d.

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An element has 18 electrons in the outer most shell. The element is (A) Transition metal(B) Rare earth metal(C) Alkaline earth metal(D) Alkali metal​

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An element has 18 electrons in the outer most shell. The element is (A) Transition metal(B) Rare earth metal(C) Alkaline earth metal(D) Alkali metal