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प्रश्न
What do you understand by typical elements?
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उत्तर
The third period elements, Na, Mg, Al, Si, P and Cl summarize the properties of their respective groups and are called typical elements.
संबंधित प्रश्न
Write the merits of the modern periodic table over Mendeleev’s Periodic table
Give two example of group 17 elements.
How were the positions of cobalt and nickel resolved in the modern periodic table?
What are the periods in a periodic table? Give two characteristics of each.
Name the scientist who stated the modern periodic law.
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Give the symbol and valency of the following element and radical.
Nitrogen [Nitride]
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
Match the atomic number with the following:
A rare gas.
