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प्रश्न
Distinguish between:
Group - Period
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उत्तर
| Sr. No. | Group | Period |
| 1. | The vertical columns of elements in the modern periodic table are called groups. | The horizontal rows of elements in the modern periodic table are called periods. |
| 2. | There are 18 groups. | There are 7 periods. |
| 3. | The properties of all the elements in a group show similarity and gradation. | The properties of elements change slowly from one end to the other in a period. |
| 4. | While going from top to bottom within any group, the number of shells goes on increasing | While going from left to right within a period, the number of shells occupied by electrons remains the same. |
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संबंधित प्रश्न
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(Atomic numbers are given in the brackets)
N(7), Be(4), Ar(18), Cl(17)
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Find the odd one out and give its explanation.
Find the odd one out and give its explanation.
Answer the following question in one sentence.
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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 |
Write the name.
Highest electropositive element
Write the name.
The group of elements having electronic configuration 2, 2.
Right or wrong sentence.
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Write an explanation.
Group
Write a scientific reason.
Boron and oxygen elements are placed in the second period in periodic table.
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- What is the atomic number of this element?
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