explain the concept of periodicity and modern periodic law.
Answers
Answer:
Answer:
i) The modern periodic law states that the physical and chemical properties of elements are the periodic function of their atomic number.
ii) Periodicity is the occurrence of certain properties (physical and chemical properties) after regular intervals or in which there is gradual variation.
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Explanation:
In the context of chemistry and the periodic table, periodicity refers to trends or recurring variations in element properties with increasing atomic number. Periodicity is caused by regular and predictable variations in element atomic structure.
Mendeleev organized elements according to recurring properties to make a periodic table of elements. Elements within a group (column) display similar characteristics. The rows in the periodic table (the periods) reflect the filling of electrons shells around the nucleus, so when a new row begins, the elements stack on top of each other with similar properties.