Question

1.what is periodic table ? and how many elements are there in modern periodic table? what is modern periodic table
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Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

The periodic table is a tabular method of displaying the elements in such a way, that the elements having similar properties occur in the same vertical column or group.

This list contains the 118 elements of chemistry. For chemistry students and teachers: The tabular chart on the right is arranged by Atomic number. The first chemical element is Hydrogen and the last is Ununoctium.

The modern periodic table is used to organize all the known elements. Elements are arranged in the table by increasing atomic number. In the modern periodic table, each element is represented by its chemical symbol. ... Elements in the same group have similar properties.