2006-11-09 10:07:15 · 8 answers · asked by ♥ 6 in Science & Mathematics ➔ Chemistry
atomic mass
2006-11-09 10:13:47 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Mendeleev was writing a Chemistry book for his students and wrote info on each element on cards, when the cards were sorted by weight he realized that similar chemical properties occurred repeatedly at regular intervals. It was no one specific property, just similar properties that helped him sort out the periods and rows.
2006-11-09 10:14:47 · answer #2 · answered by Anonymous · 0⤊ 0⤋
increasing relative atomic weight to give the list of the elements, then grouping them by similar properties
2006-11-09 10:15:56 · answer #3 · answered by binary 2 · 0⤊ 0⤋
Increasing atomic weight
2006-11-09 10:10:22 · answer #4 · answered by domhnall_oh 1 · 0⤊ 0⤋
he put them in order with their atomic masses, check the source site out for a picture of how the table looked
2006-11-09 10:12:11 · answer #5 · answered by JV 3 · 0⤊ 0⤋
atomic number, or the amount of protons and electrons in the most common isotope of the element.
2006-11-09 10:10:53 · answer #6 · answered by redcrvtte05 1 · 0⤊ 0⤋
the number of protons present in the nucleus. This goes along with the valence of each element
2006-11-09 10:10:43 · answer #7 · answered by ping1050 2 · 0⤊ 1⤋
poop
2015-09-28 09:56:02 · answer #8 · answered by Anonymous · 0⤊ 0⤋