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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?
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 is meant in the periodic table by a group?
Name two elements of each group.
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas with duplet arrangement of electrons.
Name the alkali metals, How many electron(s) they have in their outermost orbit.
Name the method by which alkali metals can be extracted.
Write the electronic configuration of the first two alkaline earth metals.
Give reason:
Alkali metals are kept in an inert solvent.
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.
