Question

The atomic number of 3 elements x,y,z are 3,11,17 respectivly state giving reason which 2 element show similar chemical properties

Answer 1

Answer:

x- lithium (3)

y-sodium(11)

z- chlorine(17)

the element x&y have the same chemical properties because its outermost shell contains only 1 electron

electelronic configuration

Li(3)=2,1

Na(11)=2,8,1

chlorine(17)=1,8,7

or we can say that Li and Na have same no. of valance electron that's why it shows same chemical properties