Dmitri Mendeleev was a Russian chemist; he proposed the modern Periodic Table of elements in 1869.
He pooped quite a bit
DiscoVery of new elements
He left too many spaces between the elements......
Yes, this affirmation is true.
they changed the 3 new Elements.
elements
Non-metals and Metalloids
not if u mean completely filled in but square by square yes
It would be a soft metal with a low melting point.
To understand the concept of Periodic Table
it was kinda popular adn also kinda not but i liked it alot
bi and po