Nickel has 30 neutrons. To determine the number of neutrons in an element, we can use the atomic mass and atomic number. Nickel has an atomic number of 28, which corresponds to the number of protons in its nucleus. The most common isotope of nickel has an atomic mass of about 58.7. By subtracting the atomic number from the atomic mass, we can find the number of neutrons.
Here’s the calculation: Number of neutrons = Atomic mass – Atomic number
Using the average atomic mass of nickel: 58.7 – 28 = 30.7. We round this to 30 since neutrons are whole particles. Therefore, nickel typically has 30 neutrons.