Question

16.
Mendeleev, Newlands , Dobereiner, Mosely, Lavoisier
The names of some scientists related to the densifications of elements are
given in the box. Identify the mattering name for each of the following
a) Formed small groups of three elements by x-ray diffraction
experiment
(1)
b) Gave serial number of the elements by X-ray diffraction experiment.
(1)
c) Classified the elements into metals and non- metals
(1)
d) When arranged the known elements in the increasing order of their
atomic mass. Found that every eighth elements is a repetition of in
properties of the first
(1)​

Answer 1

Answer:

ii) t shirts are not a great thing that has