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प्रश्न
Electronic configuration of element A is 2,8,1. Answer the following questions based on this information.
- What is the atomic number of element A?
- Find the group to which this element belongs.
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उत्तर
- Atomic number of element A is 11.
- Element A belongs to group 1.
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संबंधित प्रश्न
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Which of the above elements has the highest metallic character?
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An element has its electron configuration as 2, 8, 2. Now answer the following question.
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An element has its electron configuration as 2, 8, 2. Now answer the following question.
To which period does this element belong?
_______ is the outermost shell for elements of period 2.
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Which among the following is the largest element?
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Match the columns.
| Column A | Column B |
| 1) s -block | a) Lanthanides and actinides |
| 2) p -block | b) Group 3 to 12 |
| 3) d -block | c) Group 1, 2 |
| 4) f -block | d) Group 13 to 18 |
| e) Zero group |
Write scientific reason.
Boron and oxygen elements are placed in the second period in periodic table.
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