Question

which are the important points of modern periodic table??????​

Answer 1

Answer:

The long form of Periodic table consist of vertical columns called groups and horizontal rows are called periods. Elements are arranged in the increasing order of atomic numbers. Elements in the Modern periodic table are arranged in 7 periods and 18 groups.

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Answer 2

Answer:

1) modern periodic table is founded mainly by Henry Mosley

2) modern periodic table consist horizontal rows and columns

3) On the right side of the modern periodic table there are non metals are present and on left side of the modern periodic table consist metals

4) modern periodic table consist 118 elements

5)modern periodic table is derived from the periodic table which was set by the Mendeleev.

6) there is zigzag line present between metal and non metal which border across the metalloids.

(for further more points get more info through any text book or Google)