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प्रश्न
What is the number of elements in the 3rd period, of the modern periodic table?
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उत्तर
There are eight elements in the third period.
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संबंधित प्रश्न
State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
What are horizontal rows and vertical columns in a periodic table known as?
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
How will the tendency to gain electrons change as we go from left to right across a period? Why?
Explain structure of modern periodic table in short.
______ is the longest period in the periodical table.
Element ‘X’ forms a chloride with the formula XCl2, which is solid with a high melting point. X would most likely be in the same group of the periodic table as: ______
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
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.
Match the atomic number with the following:
A rare gas.
