Respuesta :
Correct option:
The elements form ions with multiple charges is given by option B and D, i.e., Iron and Cobalt
The electronic configurations of elements(assumed):
[tex]A. \,Zinc\,-[Ar]\,3d^{10}4s^{2}\\\\B.\,Iron\,-[Ar]3d^64s^2\\\\C.\, Sodium\, [Ne]3s^1\\\\D.\,Cobalt\,[Ar]3d^74s^2\\\\E.\,Silver\,[Kr]4d^{10}5s^1[/tex]
These electronic configurations are based many factors-
1. (n+l) energy rule which states higher the value of (n+l), higher will be the energy of the orbital.
2. Fully filled and half filled orbitals are more stable than partially filled orbitals.
Now,
Elements of d-block have multiple oxidation states. Zinc has fully filled d-orbitals. It is not considered as d-block metal as it has only 1 oxidation state, i.e, +2.
Sodium exists only in +1 oxidation state.
Also Silver exists in +1 oxidation state.
So, the correct answer is Iron and Cobalt which can form ions with multiple charges.
Correct options are B and D.
Learn more about rules of electronic configuration of elements here,
https://brainly.com/question/13749106
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