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Question

State the fundamental property on which the modern periodic table or long form of periodic table is based.

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Answer

The modern periodic table or the long form of the periodic table is based on the Modern Periodic Law which states that —

Physical and chemical properties of elements are periodic functions of their atomic number. Hence, atomic number is the fundamental property of an element on which the periodic table is based.

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With reference to group 1 [IA] of the periodic table – fill in the blanks with the correct word:
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