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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
Give two example of group 17 elements.
On which side of the periodic table will you find non-metals?
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
Give the symbol and valency of the following element and radical.
Hydroxide
What are the periods in a periodic table?
______ is the longest period in the periodical table.
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
State the group and period, of the element having three shells with three electrons in valence shell.
