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प्रश्न
Answer the following questions related to the modern periodic table.
Which block elements are known as transition elements?
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उत्तर
The d-block elements are called transition elements.
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संबंधित प्रश्न
Write the name from the description.
The group with valency zero.
Write the names from the description.
Non-metals in the third period.
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?
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 –
inner transition elements
d-block elements are otherwise known as ______.
f-block elements are also known as ______.
______ block element is placed at the bottom of the periodic table.
What are the s-block elements?
d-block elements are called transition elements.
Assertion (A): Group 2 elements in the modem periodic table are called alkaline earth metals.
Reason (R): The oxides of group 2 elements produce alkaline solutions when they are dissolved in water.
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]
Match the columns:
| Column ‘A’ | Column ‘B’ |
| Manganese | (a) Metal |
| (b) Non-metal | |
| (c) Transition metal |
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.
How are elements placed around the zig-zag line in the p-block of the periodic table?
