Question

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. 

Answer 1

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