Question

In which of the following ions, all the electrons are paired ?
(a) Cr2+
(b) Cu2+
(c) Cu+
(d) Ni2+
Answers:
1. (c) 2. (a) 3. (b) 4. (C)5. (d) 6. (e)7. (a) 8. (b) 9. (c) 10. (c)

Answer 1

Answer:

4.c

Explanation:

copper loss one electron to get 4S03d10

pair electron