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प्रश्न
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
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 the alkali metals, How many electron(s) they have in their outermost orbit.
Name the method by which alkali metals can be extracted.
Comment on the (i) reactivity (ii) colour (iii) physical state of group 17 elements.
Give reason:
Alkali metals and halogens do not occur free in nature.
Write a short note on the following type of element –
halogens
Write a short note on the following type of element –
noble gases
‘The periodic table contains elements methodically grouped together’.
State the main helpful features of the long form of the periodic table.
Give a reason for the following:
Noble gases do not form compounds readily.
