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प्रश्न
Name the gas used in:
Filling balloons
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उत्तर
Helium
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संबंधित प्रश्न
Arrange the Elements of Group 17 and Group 1 According to the Given Conditions.
Increasing order of atomic size,
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas having electronic configuration: 2, 8, 8.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Group whose elements have zero valencies.
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
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.
Give a reason for the following:
Noble gases do not form compounds readily.
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 |
