Write true or false for the following statements:

In Mendeleev’s periodic table, elements were arranged in the order of their increasing atomic masses and it was also observed that there occurs a periodic recurrence of elements with similar physical and chemical properties.

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It was assumed by Newlands that only 63 elements existed in nature and no more elements would be discovered in the future.

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In order to fit elements into his table, Newlands adjusted three elements in the same slot, but also put some unlike elements in the same slot.

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Electronic configuration of hydrogen resembles that of alkaline earth metals.

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In 1913, Dmitri Ivanovich Mendeleev showed that the atomic number of an element is a more fundamental property than its atomic mass.