State two characteristics shared by elements of the same group in the periodic table?
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Answer: same number of valence electron
valency
chemical properties
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Two characteristics shared are
- Oxidation number : all groups generally have a common oxidation number which are exhibited by all the members of the group. e.g. +1 for alkali metals, +2 for alkaline earth metals
- Number of valence electrons: all the members of a group have the same number of valence electrons.
- Show similar chemical properties
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