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What is Element ?. Basic concepts of chemistry.
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It is a type of substance which consist of. Same type of atoms.
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Examples.
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Historical Background. In nineteenth century 63 elements were known Now 118 elements are known 92 out of 118 are naturally occurring elements.
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47%. 28%. Earth Crust. 7.8%.
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1.8%. 11%. 86%. Ocean.
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78%. 21%. MIDUB - ATGogpHERE EP. Atmosphere. 0.9%.