Question

Explain structure of the Modern Periodic Tablem​

Answer 1

Answer:

which standard are you in

Answer 2

Fig . Mordern Periodic Table (source google images)

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The mordern periodic table is based on Mandleevs Periodic law .

The following laws are :-

• The properties of elements are a periodic function of thier atomic numbers.

• The atomic number of two elements can not be same but atomic mass can be same sometimes.

• Atomic number = Number of electron = Number of proton.

• The repetation of properties of element after certain regular intervals of time is periodicity property.

• The element is arranged in the increasing order of atomic number is based on Bohr's Electronic Configuration.

• The postion of isotopes are justified.

• It consist of metals , non- metals , metalloids & noble gasses.

• It consist of 118 elements .

• It is devide in 18 rows called groups & 7 cloumns called period .

• It is devided into 4 blocks s , p , d & f.

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