Boron-10 Has an Atomic Number of 5 – How Many Neutrons Are in This Isotope?

Boron-10 is an isotope of boron that has an atomic number of 5. The atomic number indicates the number of protons in the nucleus of an atom. For boron, this means it has 5 protons.

To find the number of neutrons in an isotope, we use the formula:

Number of Neutrons = Atomic Mass – Atomic Number

The atomic mass of boron-10 is approximately 10 (as indicated by the name of the isotope). Therefore, we can calculate the number of neutrons as follows:

Number of Neutrons = 10 (atomic mass) – 5 (atomic number) = 5 neutrons.

So, the answer is c) 5 neutrons.

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