which of these has 28 protons and 26 electrons?\no fe\no fe²⁺\no ni\no ni²⁺
which of these has 28 protons and 26 electrons?\no fe\no fe²⁺\no ni\no ni²⁺
Answer
Explanation:
Step1: Recall atomic number concept
The atomic number is equal to the number of protons. Nickel (Ni) has an atomic number of 28, so it has 28 protons.
Step2: Analyze ion - electron relationship
A neutral atom has an equal number of protons and electrons. If an atom has 28 protons and 26 electrons, it has lost 2 electrons and has a + 2 charge.
Answer:
D. $Ni^{2+}$