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 Form 2 Chemistry Online Lessons: Atomic structure and the periodic table

The periodic table and the modern periodic law

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Answer Text:
The Periodic table
- Is a table showing the arrangements of elements in order of their relative atomic masses.
- Is based on the ideas of Dmitri Ivanovich Medeleev.
- The modern periodic table is based on Medeleev’s periodic law which states that:
“The properties of elements are a periodic functions of
their relative atomic masses”
- The modern periodic law itself states that:
“The properties of elements are a periodic functions of their atomic numbers”


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