SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Darwin
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Shultz
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Hooke
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Mendeleev
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Detailed explanation-1: -Ask most chemists who discovered the periodic table and you will almost certainly get the answer Dmitri Mendeleev.
Detailed explanation-2: -The modern periodic table was prepared by Neils Bohr. It is also known as a long form of periodic table. It has been designed on the basis of the modern periodic law which states that “the properties of the elements are periodic functions of their atomic numbers.” This periodic law was proposed by Henry Moseley.
Detailed explanation-3: -Modern periodic law states that the chemical and physical properties of elements are the periodic function of their atomic numbers. It was proposed by Henry Moseley in the year 1913 from his X-ray studies. The modern periodic table has 18 groups (vertical columns) 7 periods (horizontal rows).