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प्रश्न
State the characteristics which remain similar in moving down in a group of the periodic table.
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उत्तर
Character that remains similar is physical and chemical properties, i.e. The alkali metal (Group 1 - A) are very reactive Li < Na < K, Rb < Cs reactivity increases. Halogen atoms are also very reactive.
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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,
Name the method by which alkali metals can be extracted.
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
Name the gas used in:
Filling balloons
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Give reason:
Inert gases do not form compounds.
Write a short note on the following type of element –
alkali metals
Write a short note on the following type of element –
noble gases
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
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 |
