Question

Name the elements present in the third modern periodic table classify them as a metals and non metals

Answer 1

the elements are Na, Mg, Al,Si, P,S,Cl,Ar.

Answer 2

left side of the staircase are metals & right side of staircase are non metals in the table
metals in 3rd period are sodium, magnesium, aluminium
non metals in 3rd period are silicon, Phosphorus,sulphurs,chlorine,argon