An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron. ... All isotopes of a particular element have the same number of protons, but have a different number of neutrons.
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a part or aspect of something abstract, especially one that is essential or characteristic.
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An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron. ... All isotopes of a particular element have the same number of protons, but have a different number of neutrons.
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