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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
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 having electronic configuration: 2, 8, 8.
Name the method by which alkali metals can be extracted.
Name the first three alkaline earth metals.
Write the electronic configuration of the first two alkaline earth metals.
Write a short note on the following type of element –
noble gases
Give a reason for the following:
Noble gases do not form compounds readily.
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
State the following:
The group whose elements are unreactive or inert.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
