Mendeleev arranged the elements in the increasing order of their atomic weight in his periodic table.
If true enter 1, else enter 0.

Hint: In 1869, only five years after Newlands set forward his Law of Octaves, a Russian scientist called Dmitri Mendeleev distributed an occasional table. Mendeleev additionally masterminded the components known at the time arranged by relative nuclear mass, yet he did some different things that made his table considerably more fruitful.

Complete step by step answer:
Mendeleev felt that the properties of components are reliant on nuclear weight. The properties of components are the occasional elements of their nuclear weight. Mendeleev understood that the physical and compound properties of components were identified with their nuclear mass in an 'occasional' way, and orchestrated them so that gatherings of components with comparable properties fell into vertical segments in his table.
Mendeleev even anticipated the presence of a few yet to be found components based on holes in his occasional table.
So it is true (1).

Note: List the merits of Mendeleev’s Periodic classification.
He assembled the components based on nuclear mass.
He left holes for unfamiliar components like Gallium, Scandium germanium. Indeed, even he left full gathering empty for unfamiliar latent gases.
He could anticipate extents of a few components on premise of their situation in intermittent table like $Ga$, $Sc$ and so forth
He could anticipate blunders in nuclear loads of certain components like gold, platinum and so forth
The above declaration and reason is right yet to an affirmation the explanation isn't advocated. He orchestrated the components as per expanding as a result of periodicity in properties that he could find in the components.