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प्रश्न
Write a short note on the following type of element –
transition elements
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.
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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.
The metalloids in the second and third periods.
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 ______.
What are the s-block elements?
Group 1 (except hydrogen) elements are called alkali metals.
Assertion (A): Noble gases are chemically inert in nature.
Reason (R): Noble gases have stable electronic structures.
Match the columns:
| Column ‘A’ | Column ‘B’ |
| Manganese | (a) Metal |
| (b) Non-metal | |
| (c) Transition metal |
