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30-05-2016
Chemistry

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The element in Period 4 and Group 1 of the Periodic Table would be classified as a
A. metal
B. metalloid
C. nonmetal
D. noble gas

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30-05-2016

Option A. Metal

Starting from K- Potassium up to As-Arsenic are all metals, the three elements are special: Se-Selenium(Non-Metals),Br-Bromine(Halogens),Kr-Noble gas still part of the row but not classified as metal.

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