After the rejection of Newlands Raw of Octaves, various scientists were in the search of a relationship that patterned the properties of all elements with their respective atomic masses. Meanwhile, Dmitri lvanovich Mendeleev, a Russian chemist became the important contributor for the development of the system of Periodic Table of elements where the elements were arranged on the basis of their fundamental property, the atomic mass, and also on the similarity of chemical properties. The above image indicates some part of the Mendeleev's Periodic Table.1. When Mendeleev was working with his periodic table, ........ elements were known.a. 58b. 63c. 108d. 1122. Mendeleev's Periodic Raw, states that the properties of elements are the periodic function of their atomic numbers.N State true or false.a. TRUEb. FALSE3. Identify the elements which were not discovered at the time of Mendeleev.a. scandiumb. galliumc. germaniumd. All the options4. Name the vertical columns in Mendeleev's Periodic Table.a. Groupsb. Elementsc. Periodsd. Functions5. Lame the horizontal rows in Mendeleev's Periodic Table.a. Groupsb. Elementsc. Periodsd. Functions