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प्रश्न
State modern periodic law.
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उत्तर
It states that "The physical and chemical properties of the elements are a periodic function of their atomic numbers." According to this law, if we arrange the elements based on their increasing atomic numbers, we find that the elements with similar physical and chemical behaviour will be grouped together after a certain interval of elements.
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संबंधित प्रश्न
Why do all the elements of the same group have similar properties?
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
How many periods and groups are there in the long form of periodic table?
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
State the modern periodic law.
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Which of the following is the outermost shell for elements of period 2?
Which of the following elements would lose an electron easily?
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
Answer the following in respect of element \[\ce{_16^32S}\].
- Give its electronic configuration.
- To which group and period does it belon?
- What is its valency?
- Is it a metal or a non-metal?
- Is it a reducing agent or an oxidising agent?
- Give its formula with hydrogen.
