Advertisements
Advertisements
प्रश्न
Write a short note on the following type of element –
transition elements
Advertisements
उत्तर
d-block elements (40 elements) which are included in groups 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 [IB to VII-B and VIII] are called transition elements as most of them exhibit variable valency and are used as catalysts.
APPEARS IN
संबंधित प्रश्न
Write the name from the description.
The period with electrons in the shells K, L, and M.
Write the name from the description.
The family of metals having valency two.
Write the name from the description.
Nonmetals in the third period.
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 |
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.
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 p-block elements
Group 1 (except hydrogen) elements are called alkali metals.
