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प्रश्न
The scientist who propounded the modern periodic law is ______.
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उत्तर
The scientist who propounded the modern periodic law is Dimitri Mendeleev.
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संबंधित प्रश्न
On the basis of electronic configuration, how will you identify chemically similar elements?
What is a group in the periodic table?
What are the advantages of the periodic table?
Give the symbol and valency of the following element and radical.
Bisulphate
State what is meant by the term chemical formula.
Give the chemical formula of carbonic acid
To the left of the zig-zag line in the periodic table are the metal elements.
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has variable valency and is a member of the Oxygen family (group 16).
Spot the error:
There are 5 periods and 17 groups in the modern periodic table.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
