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प्रश्न
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 |
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उत्तर
|
Column A |
Answers |
|
(a) Element short by 1 electron in octet |
(v) Halogens |
|
(b) Highly reactive metals |
(iii) Alkali metals |
|
(c) Non-reactive elements |
(ii) Noble gases |
|
(d) Elements of Groups 3 to 12 |
(i) Transition elements |
|
(e) Radioactive elements |
(vi) Actinides |
|
(f) Elements with 2 electrons in the outermost orbit |
(iv) Alkali earth metals |
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संबंधित प्रश्न
Write the name from the description.
The family of metals having valency one.
What is the main characteristic of the last elements in the periods of a periodic table? What is the general name of such elements?
Write a short note on the following type of element –
inner transition elements
Name or state following with reference to the element of the first three periods of the periodic table.
The periods which contain the inner transition elements.
What are the s-block elements?
What are the p-block elements
d-block elements are called transition 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.
Name the blocks with the groups that they consist of.
Answer the following questions related to the modern periodic table.
Which block elements are known as transition elements?
