Question

what are periods and groups Worok modern
Periodic table?
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Answer 1

Answer:

There are 7 periods and 18 periods..

Explanation:

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. ... Columns of the periodic table are called groups. Elements in the same group have similar properties.

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