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  • 25-10-2019
  • Chemistry
contestada

The group number of an element is equal to the number of ………………..
electrons.

Respuesta :

nameee87 nameee87
  • 25-10-2019

Answer:

Outer

Explanation:

If you take a look at all atoms you can see that for example Na is in the first group and has 1 electron in its last shell.

It has 11 electrons. 2 electron go in the first shell, 8 in the 2. shell and one electron is left in the 3. shell (which is also why it reacts well) you can look at all atoms it might work every where.

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