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Which of the following is a non-reactive metal with 2 valence electrons?
O Magnesium
Chlorine
Carbon
Helium

Respuesta :

Answer:

» a. Magnesium

Explanation:

• Magnesium is least reactive and

• Magnesium has atomic number 12. Its electronic configuration is 2,8,2 . Thus, it has

2 valence electrons.

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