Answer:

1.) Element: Carbon

Atomic number: 6

Atomic mass: 12

Number of protons: 6

Number of neutrons: 6

Number of electrons: 6

2.) Element: Aluminum

Atomic number: 13

Atomic mass: 27

Number of protons: 13

Number of neutrons: 14

Number of electrons: 13

3.) Element: Chlorine

Atomic number: 17

Atomic mass: 35

Number of protons: 17

Number of neutrons: 18

Number of electrons: 17

Explantion:

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