1.
Who proposed the law of octaves of elements?
Dmitri Mendeleev
b. Henry Moseley
c. John Alexander Reina Newlands
d. Julius Lothar Meyer
Who organized the elements in increasing atomic mass and provided
spaces for the then-unknown elements?
Alexandre-Émile Beguyer de Chancourtois
b. Dmitri Mendeleev
2.
a.
C.
Henry Moseley
John Alexander Reina Newlands
d.
PLSSS PAKI SAGOT KAYLANGAN KO NA BUKAS​