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 1

Answer:

may this answer help you

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.

Answer 2

★ 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.

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