How do you appreciate the efforts of scientists In discovering elements?

Explanation

1) Generally elements are available In nature in the form of their ores.
2) Study of properties of elements lead to the development of civilization.
3) The efforts of early alchemists-up 'to and Including Newton, Hennig Brand, Sir Humphry Davy are appreciable for their works in unearthing new elements.
4) The definition of element and compound given by Robert Boyle and Lavoisier lead to study the properties of elements and compounds.