Question

match each element with its correct number of valence electrons: (3 points) magnesium sodium oxygen aluminum carbon nitrogen

Explanation:

To solve this, we use the periodic table group number (for main - group elements) to determine valence electrons. Elements in Group 1 have 1 valence electron, Group 2 have 2, Group 13 have 3, Group 14 have 4, Group 15 have 5, and Group 16 have 6.

Step 1: Magnesium

Magnesium (Mg) is in Group 2. So, it has 2 valence electrons.

Step 2: Sodium

Sodium (Na) is in Group 1. So, it has 1 valence electron.

Step 3: Oxygen

Oxygen (O) is in Group 16. So, it has 6 valence electrons.

Step 4: Aluminum

Aluminum (Al) is in Group 13. So, it has 3 valence electrons.

Step 5: Carbon

Carbon (C) is in Group 14. So, it has 4 valence electrons.

Step 6: Nitrogen

Nitrogen (N) is in Group 15. So, it has 5 valence electrons.

Answer:

• Magnesium: 2 valence electrons
• Sodium: 1 valence electron
• Oxygen: 6 valence electrons
• Aluminum: 3 valence electrons
• Carbon: 4 valence electrons
• Nitrogen: 5 valence electrons