Why are protons in an atom so important

A proton is one of the most important types of subatomic particles. Protons combine with electrons and (usually) neutrons to make atoms. Protons also play a significant role in the atom because the tendency for an atom to either lose, gain or share electrons is dependent upon the charge of the nucleus. Therefore, we can say that the chemical reactivity of an atom is dependent upon the number of electrons and protons, and independent of the number of neutrons.

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in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

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