Question

Forgot to add attachment in the last question...​

Answer 1

Answer:

C.

Explanation:

Cu29 Ag47 Au79 is the right sequence.

Answer 2

(c) Cu, Au, Ag is the right option

Reason- Except in option (c) ,in all sequence elements are arranged in increasing order of atomic number.

(a) Ca(20) <Sr(38) <Ba(56)

(b) N(7) <P(13) <As(33)

(c) Cu(29) <Au(79)> Ag(47)

(d) Cl(17) < Br(35) <I(53)

Therefore,(c) is the wrong sequence