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प्रश्न
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
उत्तर
The number of valence electrons in atoms determines which element will be the first and which the last in a period of the periodic table.
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संबंधित प्रश्न
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State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
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State the modern periodic law.
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