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Questions
State the modern periodic law.
Answer the following sub-question regarding the modern periodic table:
Write modern periodic law.
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Solution
Modern periodic law states that “The physical and chemical properties of all elements are a periodic function of their atomic numbers”.
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Periodic table
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Give the symbol and valency of the following element and radical.
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Give the symbol and valency of the following element and radical.
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| Period ↓ | ||||||||
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