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प्रश्न
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
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उत्तर
Long-form of periodic table elements were arranged in increasing order of atomic number.
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संबंधित प्रश्न
State modern periodic law.
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
Give the chemical formula of sodium sulphite
Give the chemical formula of carbonic acid
Identify gas A in the following experiment.
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 statements about the Modern Periodic Table is correct:
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
If the electronic configuration of aluminium is 2, 8, 3, how many electrons are there in the outer shell of thallium?
