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प्रश्न
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
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उत्तर
Reactions of the first three alkaline earth metals with dilute hydrochloric acid:
Be + 2HCl → BeCl2 + H2
Mg + 2HCl → MgCl2 + H2
Ca + 2HCl → CaCl2 + H2
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संबंधित प्रश्न
What are the following group known as?
Group 17
Name two elements of each group.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas with duplet arrangement of electrons.
Name the method by which alkali metals can be extracted.
How do alkaline earth metals occur in nature?
Write the electronic configuration of the first two alkaline earth metals.
How many electrons do inert gases have in their valence shells?
Give reason:
Inert gases do not form compounds.
Write a short note on the following type of element –
halogens
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 |
