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An atom of an element has the electronic configuration 2.8.2

  1. State its atomic numbers
  2. To which group of the periodic table does it belong? Explain.
  3. Is the element a metal or a non-metal? Explain
  4. If the atom has 14 neutrons in its nucleus state its mass number. 

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  1. 12
  2. Group 2. It has two electrons in its outermost energy level.
  3. A metal. It has less than 4 electrons in its outermost energy level.
  4. 26
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