Question

Identify the wrong sequence of the elements in a group
(a) Ca, Sr, Ba
(b) Cu, Au, Ag
(c) N, P, As
(d) Cl, Br, I

Answer 1

Answer:

b

Explanation:

It should be Cu , Au , Ag not Cu , Ag , Au

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Answer 2

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.

i hope it helps you.