Elements and Compounds

In one atom how many protons and neutrons does the element boron have?


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This is very simple, just look at the periodic table. Boron has the atomic number of 5, meaning that it has five protons and five electrons. As for the neutrons, most chemicals have isotopes, which means that one atom of an element may have a slightly lower or higher neutron count of an atom of the same element. In boron's case, it has two isotopes. Boron-10 would have 5 neutrons, and Boron-11 would have 6 neutrons, although boron-11 makes up somewhere in the range of 80% of known boron atoms.