what is the periodic trend in the variation of valency while going down a group? explain the answer with reference to group-1, group-2 and group-18
Answers
Answer:
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Explanation:
Valence numbers do not vary as you go down a group, since the periodic table is arranged by atomic number and chemical properties. All members of a group have the same number of valence electrons.
★ Question:-
what is the periodic trend in the variation of valency while going down a group? explain the answer with reference to group-1, group-2 and group-18
★ Answer:-
PERIODICTABLE
⟩⟩ Group 2 elements have the valency 2 and group 18 elements have their valency 0 due to their inertness.
⟩⟩ Valence numbers do not vary as you go down a group, since the periodic table is arranged by atomic number and chemical properties.
⟩⟩ All members of a group have the same number of valence electrons.
⟩⟩ The atomic radius usually increases while going down a group due to the addition of a new energy level (shell).
⟩⟩ However, atomic radii tend to increase diagonally, since the number of electrons has a larger effect than the sizeable nucleus.
⟩⟩ There is no universal pattern, the changes are different in different columns.