Question

The energy required to excite an electron of hydrogen atom from first orbit to second orbit is

Answer 1

Answer:

Which of the following reactions will not occurs? Why not?

(a) MgSO

4

(aq)+Cu(s)→CuSO

4

(aq)+Mg(s)

(b) CuSO

4

(aq)+Fe(s)→FeSO

4

(aq)+Cu(s)

(c) MgSO

4

(aq)+Fe(s)→FeSO

4

(aq)+Mg(s)