Q19 of 181 Page 282

What is the name of those elements which divide metals and non-metals in the periodic table ?

Boron, Silicon, Germanium etc are called metalloids and divide metals and the non metals in the periodic table.


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19

On which side of the periodic table will you find metals ?

 19

On which side of the periodic table will you find non-metals ?

 20

Name three elements that have a single electron in their outermost shells.

 20

Name two elements that have two electrons in their outermost shells.