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प्रश्न
State the characteristics which remain similar in moving down in a group of the periodic table.
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
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 17
Name two elements of each group.
Name the alkali metals, How many electron(s) they have in their outermost orbit.
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
How do alkaline earth metals occur in nature?
Write the electronic configuration of the first two alkaline earth metals.
Give reason:
Alkali metals and halogens do not occur free in nature.
Write a short note on the following type of element –
alkaline earth metals
State the main helpful features of the long form of the periodic table.
