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प्रश्न
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
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उत्तर
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संबंधित प्रश्न
How many groups and periods are there in the modern periodic table?
Differentiate between Normal elements and Transition elements.
Why do elements in the same group show similar properties but the elements in different groups show different properties?
Taking into consideration the period of the elements given below, answer the following questions:
| Elements | Atomic Radius (pm) |
| O | 66 |
| B | 88 |
| C | 77 |
| N | 74 |
| Be | 111 |
| Li | 152 |
- Arrange the above elements in decreasing order of their atomic radii.
- State the period to which the above elements belong.
- Why this arrangement of elements is similar to the above period of modern periodic table?
- Which of the above elements have the biggest and the smallest atom?
- What is the periodic trend observed in the variation of atomic radius while going from left to right within a period?
State whether the following statement is true or false
Similar electronic configuration is repeated after intervals of 2, 8, 8, 18 and 32.
How could the atomic radius of a noble gas be compared with the other elements in a period?
The following questions refer to the Periodic Table.
What is the common feature of the electronic configurations of the elements in group 7?
Arrange the following as per instruction given in the bracket.
Li, K, Na, H ( decreasing order of their potential ionisation )
State the property trends in general of elements on moving from left to right in a period of the periodic table.
Name or state following with reference to the element of the first three periods of the periodic table.
The formula of the hydroxide of the element having electronic configuration 2, 8, 2.
