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प्रश्न
Match the elements of List – I with their type from List – II.
List – I | List – II |
1. Highly reactive, univalent metals | A: Halogens |
2. Highly reactive, univalent non-metals | B: Transition elements |
3. Unreactive, inert elements | C: Alkali metals |
4. Elements of group 3 to 12 [IB to VII B and VIII] | D: Lanthanide series |
5. Radioactive elements | E: Noble gases |
F: Actinide series |
उत्तर
List – I | List – II |
1. Highly reactive, univalent metals | C: Alkali metals |
2. Highly reactive, univalent non-metals | A: Halogens |
3. Unreactive, inert elements | E: Noble gases |
4. Elements of group 3 to 12 [IB to VII B and VIII] | B: Transition elements |
5. Radioactive elements | F: Actinide series |
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संबंधित प्रश्न
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
What are the following group known as?
Group 1
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
Name the alkali metals, How many electron(s) they have in their outermost orbit.
Name the method by which alkali metals can be extracted.
How do alkaline earth metals occur in nature?
How many electrons do inert gases have in their valence shells?
Give reason:
Alkali metals are kept in an inert solvent.
Write a short note on the following type of element –
noble gases
Name or state following with reference to the element of the first three periods of the periodic table.
An alkaline earth metal in period 3.