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प्रश्न
What is the main characteristic of the last element in each period of the periodic table?
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उत्तर
The last element in each period of the periodic table is a gaseous element with its valence shell completely filled. Except for helium, which has a complete duplet configuration, all five gases have a complete octet configuration.
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संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
Fill in the following blank with suitable word:
Group 18 elements are called ...............
Give two example of group 1 elements.
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Write a short note.
Structure of the modern periodic table.
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The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
The three elements A, B and C with similar properties have atomic masses X, Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called as? Give one example of such a set of elements.
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