Question

identify the wrong sequence of the elements in a group:-(1)Ca,Br,Ba;(2)Cu,Au,Ag;(3)N,P,As;(4)Cl,Br,I​

Answer 1

hi mate,

Answer:

(B). In Cu, Au, Ag,

the atomic number of copper (cu) is 29, the atomic number of gold (au) is 79, the atomic number of silver (ag) is 47.

So 47 is not greater than 79 it is incorrect.

i hope it helps you.