How many elements are there altogether? How many of them occur naturally?
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In chemistry, an element is a pure substance consisting only of atoms that all have the same numbers of protons in their atomic nuclei. Unlike chemical compounds, chemical elements cannot be broken down into simpler substances by chemical means. The number of protons in the nucleus is the defining property of an element.
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The elements which are available in nature freely are called naturally available elements. - In the periodic table there are 118 elements, all the elements (118) do not occur naturally.
Elements 1 through 92 (except for elements 43 and 61) occur naturally on Earth, although some are only present in extremely small quantities.
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