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प्रश्न
______ forms the basis of the modern periodic table.
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उत्तर
Atomic number forms the basis of the modern periodic table.
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संबंधित प्रश्न
Give two example of group 18 elements.
On which side of the periodic table will you find metals?
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
Explain why All the elements of a group have similar chemical properties.
How will the tendency to gain electrons change as we go from left to right across a period? Why?
State what is meant by the term chemical formula.
Fill in the blank:
The element lithium in the Modern Periodic Table with valency 1+ belongs to the group ______.
Select the appropriate options and complete the following paragraph:
(metals, non-metals, metalloids, four, seven, s-block, p-block, d-block, f-block).
On the basis of electronic configuration, elements in the modern periodic table are classified Into ______ blocks. Groups 1 and 2 elements are included in ______ and all these elements are metals. (except Hydrogen). Group 13 to 18 elements are included in ______. This block contains metals, non-metals and metalloids. Group 3 to 12 elements are included in ______ and all the elements are ______ elements shown at the bottom of the periodic table i.e. Lanthanides and Actinides constitute ______ and all these elements are metals.
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
An element has 2 electrons in its N shell.
State its position in periodic table.
