State whether the following statements are true or false:
$(i)$ The chart of elements presented by $Courtois$ could predict the stoichiometry of oxides of some metals.
$(ii)$ $Li, Na, Rb$ are known as $Döbereiner's$ triads.
$(iii)$ In $1863$,$Newlands$ classified the $56$ discovered elements into $18$ groups.
$(iv)$ $Mendeleev's$ periodic table is based on the atomic number of elements.

Explain the Law of Octaves given by Newland.

Which of the following is a Dobereiner's triad?

Briefly describe the contributions of various scientists to the development of the Periodic Table.

Match the following and select the correct option.

List-$I$	List-$II$
$(1)$ Lothar Meyer	$(A)$ First to present a periodic table showing correct arrangement up to Calcium.
$(2)$ $A$.$E$.$B$. de Chancourtois	$(B)$ Arranged elements in horizontal and vertical rows based on atomic weight.
$(3)$ Newlands	$(C)$ Discovered the element with atomic number $101$.
$(4)$ Seaborg	$(D)$ Suggested that arrangement based on atomic weight is an important concept in the periodic table.
	$(E)$ Presented the first possible periodic table.
	$(F)$ Arranged elements into groups of three.
	$(G)$ Law of Octaves.

Given below are two statements :
Statement $(I):$ According to the Law of Octaves,the elements were arranged in the increasing order of their atomic number.
Statement $(II) :$ Meyer observed a periodically repeated pattern upon plotting physical properties of certain elements against their respective atomic numbers.
In the light of the above statements,choose the correct answer from the options given below :