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20 October, 09:13

Which of the following elements is a Group 1 metal?

A. He

B. F

C. Ca

D. Cs

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Answers (1)
  1. 20 October, 10:22
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    Helium (He) is a noble gas. Fluorine (F) is a halogen. Calcium (Ca) is an alkaline earth metal and is located in group 2. Cs is on the furthest left side, hence making it be displayed as an alkaline metal and located in group 1.
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