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Human Eye and Colourful World — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHuman Eye and Colourful World2 Marks
Question
How it can be proved that the basic structure of the modern periodic table is based on the electronic configuration of atoms of different elements?
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Answer

Modern periodic table consists of groups and periods. Where number of valence electrons determines the group and number of shells determines the period.

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