40

Ca2+
20

79
Br-
35

58
Ni2+
28

For the three ions written above give the correct number of each of the following:

a) the maximum number of electrons in the first shell

b)the unpaired electrons in an oxygen atom

c)the full orbitals in a chlorine atom

d)the number of types of f-orbitals

Please help and explain clearly and fully im really confused

2 answers

You need an inperson tutor. Being "really confused" and not being able to ask specific questions is not conducive to online tutoring.
Please help someone