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प्रश्न
Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
7N, 6C, 8O, 5B, 13Al Which is the most electronegative element among these?
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उत्तर
7N, 6C, 8O, 5B, 13Al
The electronic configuration of the following elements is:
7N =2, 5
6C = 2, 4
8O = 2, 6
5B = 2, 3
13Al = 2, 8, 3
8O is the most electronegative element among these because electronegativity increases as we move from left to right in a period of the periodic table.
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संबंधित प्रश्न
An element has its electron configuration as 2, 8, 2. Now answer the following question.
a. What is the atomic number of this element?
b. What is the group of this element?
c. To which period does this element belong?
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What is the group of this element?
Find the odd one out and give its explanation.
Answer the following question in one sentence.
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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 |
Match the columns.
| Column A | Column B |
| 1) Alkaline earth metals | a) Group 18 |
| 2) Alkali metals | b) Group 17 |
| 3) Halogen | c) Group 2 |
| 4) Noble gas | d) Group 1 |
| e) Group 14 |
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Right or wrong sentence.
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- 2, 8, 2
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Observe the periodic table given below and write the answers of the questions.
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