How do you appreciate the efforts made by scientists to explain the structure of atom by developing various atomic models?

Explanation

1) Structure of atom, till today it is mysterious and challenging the scientists.
2) We have to appreciate the scientists right from Lavoisier, who proposed law of conservation of mass, Proust who proposed law of constant proportions, John Dalton for his first model of atom, Rutherford for giving planetary model of atom and Neils Bohr for his model of atom.
3) Till today scientists are trying to know the existence of more and sub-atomic particles besides electrons, protons and neutrons.
4) Hence the efforst of scientists are highly appreciable, for making our lives comfortable and leaving many challenges before us to unveil or discover them.