Q4 of 29 Page 72

Modern periodic table is based on which property of the elements:

The modern periodic table is introduced by Henry Mosley in 1913. He suggested that the chemical and physical properties of the elements are periodic functions of their atomic number.

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2

The smallest particle of matter is:

 3

First periodic classification of element was given by:

 5

The number of period and groups in modern periodic table are:

 6

In periodic table, atomic size on moving top to bottom in a group will: