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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 period with electrons in the shells K, L, and M.
Match column A with column B.
|
Column A |
Column B |
|
(a) Element short by 1 electron in octet |
(i) Transition elements |
|
(b) Highly reactive metals |
(ii) Noble gases |
|
(c) Non-reactive elements |
(iii) Alkali metals |
|
(d) Elements of groups 3 to 12 |
(iv) Alkaline earth metals |
|
(e) Radioactive elements |
(v) Halogens |
|
(f) Elements with 2 electrons in the outermost orbit |
(vi)Actinides |
Write a short note on the following type of element –
transition elements
Write a short note on the following type of element –
normal 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.
______ block element is placed at the bottom of the periodic table.
d-block elements are called transition elements.
Assertion (A): Noble gases are chemically inert in nature.
Reason (R): Noble gases have stable electronic structures.
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.
How are elements placed around the zig-zag line in the p-block of the periodic table?
