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Periodic table: periods and groups

The modern periodic table arranges elements by atomic number into periods (rows, number of energy levels) and groups (columns; in the main groups, elements of one group have similar properties), with metals on the left, non-metals on the right and noble gases in the last group.

The idea, in English

The modern periodic table arranges elements by atomic number into periods (rows, number of energy levels) and groups (columns; in the main groups, elements of one group have similar properties), with metals on the left, non-metals on the right and noble gases in the last group.

Explain in Egyptian Arabic

الـ modern periodic table بيرتب العناصر حسب الـ atomic number في periods (صفوف أفقية، رقم الصف = عدد الـ energy levels) و groups (أعمدة رأسية، وعناصر الـ group الواحد خواصها متشابهة في المجموعات الرئيسية). الـ metals على الشمال، والـ non-metals على اليمين، والـ noble gases في آخر group.

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