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प्रश्न
Write a short note on the following type of element –
inner transition elements
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उत्तर
f-block elements i.e. Lanthanides and actinides are called inner transition elements.
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संबंधित प्रश्न
Write the name from the description.
The family of metals having valency one.
Write the name from the description.
The family of metals having valency two.
Write the names from the description.
The metalloids in the second and third periods.
Write the names from the description.
Two elements having valency 4.
What is the main characteristic of the last elements in the periods of a periodic table? What is the general name of such elements?
Statement: Elements in a group generally possess similar properties but elements along a period have different properties.
Reason: The difference in electronic configuration makes the element differ in their chemical properties along a period.
If the electronic configuration of an element is 1s2 2s2 2p6 3s2 3p1’then it will
occupy ______ block of the periodic table.
Group 3-12 elements in the modern periodic table are called d block elements.
Write the answer to the questions with reference to the periodic table.
- What do (A), (B), (C), and (D) represent? [1]
- Elements are arranged in increasing order of their ______. [1]
- Write the electronic configuration of the first four elements in Group I. [1]
- What change in atomic radius is observed in moving from left to right in a Period? [1]
- Give a reason for (d). [1]
Answer the following questions related to the modern periodic table.
Which block elements are known as transition elements?
