Genesis of periodic classification, development leading to the present

1.	Genesis of periodic classification, development leading to the present form of the periodic table
Answer» <html><body><p>In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging <a href="https://interviewquestions.tuteehub.com/tag/chemical-914796" style="font-weight:bold;" target="_blank" title="Click to know more about CHEMICAL">CHEMICAL</a> elements by <a href="https://interviewquestions.tuteehub.com/tag/atomic-2477" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMIC">ATOMIC</a> mass. He <a href="https://interviewquestions.tuteehub.com/tag/predicted-7271267" style="font-weight:bold;" target="_blank" title="Click to know more about PREDICTED">PREDICTED</a> the discovery of other elements, and left spaces open in his periodic table for them. In 1886 French physicist <a href="https://interviewquestions.tuteehub.com/tag/antoine-1980970" style="font-weight:bold;" target="_blank" title="Click to know more about ANTOINE">ANTOINE</a> Bequerel first discovered radioactivity.</p></body></html>

Genesis of periodic classification, development leading to the present form of the periodic table