Question

3) Read the passage given below and answer the following questions.
The classifiacation of elements resulting from an arrangement of the
elements in an increasing order of their atomic numbers is the modem periodic
table. The properties of elements can be predicted more accurately with the
help of the modern periodic table formed on the basis of atomic numbers. The
modern periodic table is also called the long form of the periodic table.
In the modern periodic table the elements are arranged in accordance
with their atomic number. As a result, most of the drawbacks of Mendeleev's
periodic table appear to be removed.
a) How was modem periodic table prepared?
b) State the other name of modern periodic table.
c) State one property of modern periodic table.​

Answer 1

a) The modern periodic table was prepared in 1869 by Russian chemist Dimitri Mendleev he started making periodical table by arranging chemical elements by atomic mass.

b)It is also called as periodic table of elements.

c) Properties of elements are a periodic function of atomic numbers.

Answer 2

Answer:

a)- The modern Periodic table was prepared by arranging the elements in an increasing order of their atomic number

b)- The Other name for modern Periodic table is 'Long form of periodic table'

c)- Most of the drawbacks of Mendeelev's Periodic table appears to be removed

Explanation:

Hope I have gave the Correct Answer