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प्रश्न
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
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उत्तर
The size of atoms decreases when moving from left to right in a period. Thus, in a particular period, the alkali metal atoms are the largest and the halogen atoms are the smallest.
Li > Be > B > C > N > O > F
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संबंधित प्रश्न
What are the following group known as?
Group 1
What are the following group known as?
Group 18
Name two elements of each group.
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
Write the electronic configuration of the first two alkaline earth metals.
Name the gas used in:
Light bulbs
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Write a short note on the following type of element –
noble gases
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.
