Question

Brief note on modern periodic table
What is modern periodic table

Answer 1

HI


Elements are arranged in thetable by increasing atomic number. ... Rows of the periodic table are called periods. From left to right across a period, eachelement has one more proton than the element before it. Columns of the periodic table are called groups.


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Answer 2

Modern Periodic Table:-)

■ table consists 7 period and 18 group

■ period number 1st 2nd and 3rd are short period but 4th 5th 6th and 7th on long periods.

■ total number of elements in each period designate by magic number which are 2 , 8 8 , 18 , 18 , 32

■ in long form of table group are divided into subgroups .

■ for general introduction of s p and D Block see the attachment

■ s and p block elements are known as Representative elements or normal elements

■ D block elements are known as transition elements

■ F block elements are known as inner transition elements because they are present in between transition elements