Which of the species below has 28 protons and 26 electrons? A)Fe²⁺ B)Ni²⁺ C) _Fe D) _Ni

Question

Quizplus · Accepted Answer

The atomic number or number of protons in an element is unique to that element. 
The atomic number of iron (Fe) is 26, therefore it cannot have 28 protons. 
The atomic number of nickel (Ni) is 28, so it can have 28 protons. 
Furthermore, the species given in option B is the only one that contains nickel (Ni) as an element.

Which of the Species Below Has 28 Protons and 26