Respuesta :

1 - valence electrons
2 - electrons
3 - two electrons
4 - eight electrons
5 - eighteen electrons
6 - nucleus
7 - protons
8 - neutrons
9 - shell or energy level
10- atomic number
11 - element symbol
12 - atomic name
13 - atomic mass
ghager

Answer:

1- valence electrons

2 - electrons

3 - two electrons

4 - eight electrons

5 - eighteen electrons

6 - nucleus

7 - protons

8 - neutrons

9 - shell or energy level

10- atomic number

11 - element symbol

12 - atomic name

13 - atomic mass

Explanation:

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