write any two properties of groups
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Group
- A group is a finite or infinite set of elements together with a binary operation (called the group operation) that together satisfy the four fundamental properties of closure, associativity, the identity property, and the inverse property. ...
- Closure: If and are two elements in , then the product is also in .
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Elements with similar valance shell electronic configuration are placed in the same group.
Elements show gradually from top to bottom in a group.
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