How many valence electrons does carbon (C) have? Solution: Carbon is in Group 14 of the periodic table, so it has 4 valence electrons.
- How many valence electrons does oxygen (O) have? Solution: Oxygen is in Group 16 of the periodic table, so it has 6 valence electrons.
- How many valence electrons does potassium (K) have? Solution: Potassium is in Group 1 of the periodic table, so it has 1 valence electron.
- How many valence electrons does sulfur (S) have? Solution: Sulfur is in Group 16 of the periodic table, so it has 6 valence electrons.
- How many valence electrons does nitrogen (N) have? Solution: Nitrogen is in Group 15 of the periodic table, so it has 5 valence electrons.
- How many valence electrons does a calcium (Ca²+) ion have? Solution: Calcium ion (Ca²+) has lost 2 electrons to become a positive ion, so it now has 0 valence electrons.
- How many valence electrons does a fluoride (F-) ion have? Solution: The fluoride ion (F-) has gained 1 electron to become a negative ion, so it has 8 valence electrons.
- How many valence electrons does neon (Ne) have? Solution: Neon is in Group 18 of the periodic table, so it has 8 valence electrons.
- How many valence electrons does aluminum (Al) have? Solution: Aluminum is in Group 13 of the periodic table, so it has 3 valence electrons.
- How many valence electrons does chlorine (Cl) have? Solution: Chlorine is in Group 17 of the periodic table, so it has 7 valence electrons.
- How many valence electrons does a sodium (Na⁺) ion have? Solution: Sodium ion (Na⁺) has lost 1 electron to become a positive ion, so it now has 0 valence electrons.
- How many valence electrons does a oxide (O²-) ion have? Solution: The oxide ion (O²-) has gained 2 electrons to become a negative ion, so it has 8 valence electrons.
- How many valence electrons does silicon (Si) have? Solution: Silicon is in Group 14 of the periodic table, so it has 4 valence electrons.
- How many valence electrons does phosphorus (P) have? Solution: Phosphorus is in Group 15 of the periodic table, so it has 5 valence electrons.
- How many valence electrons does magnesium (Mg) have? Solution: Magnesium is in Group 2 of the periodic table, so it has 2 valence electrons.
- How many valence electrons does boron (B) have? Solution: Boron is in Group 13 of the periodic table, so it has 3 valence electrons.
- How many valence electrons does a sulfide (S²-) ion have? Solution: The sulfide ion (S²-) has gained 2 electrons to become a negative ion, so it has 8 valence electrons.
- How many valence electrons does helium (He) have? Solution: Helium is in Group 18 of the periodic table, so it has 2 valence electrons.
- How many valence electrons does lithium (Li) have? Solution: Lithium is in Group 1 of the periodic table, so it has 1 valence electron.
How many valence electrons does a nitride (N³-) ion have? Solution: The nitride ion (N³-) has gained 3 electrons to become a negative ion, so it has 8 valence electrons.
