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Alla [95]
3 years ago
7

How many main groups of elements are there

Chemistry
1 answer:
Alexeev081 [22]3 years ago
3 0

Answer:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.

Explanation:

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