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Question
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
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Solution
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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RELATED QUESTIONS
What are the following group known as?
Group 17
Write the electronic configuration of the first two alkaline earth metals.
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Alkali metals are kept in an inert solvent.
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Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Write a short note on the following type of element –
alkali metals
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alkaline earth metals
Select the correct answer from the options given below.
The most reactive halogen from group 17.
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Noble gases do not form compounds readily.
State the following:
The group whose elements are unreactive or inert.
