answer:
If boron gains two protons, its identity would change from boron to carbon.
Boron is an element with an atomic number of 5, which means it has 5 protons in its nucleus. By gaining two protons, it would now have a total of 7 protons, which corresponds to the atomic number of carbon.
Changing the number of protons changes the element itself because the atomic number determines the identity of an element. Each element has a unique number of protons, and this number defines its place on the periodic table and its chemical properties.
Therefore, if boron gains two protons, it would become carbon, an element with 6 protons.
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