Atoms: Ca & O
Valence Electrons: Ca = 2, O = 6
Electron transfer from/TE: Ca = 2, O = 2
Ions formed: Ca = +2, O = -2
Atoms: Be & F
Valence Electrons: Be = 2, F = 7
Electron transfer from/TE: Be = 1, F = 8
Ions formed: Be = -1, F = +8
Atoms: Mg & S
Valence Electrons: Mg = 2, S = 6
Electron transfer from/TE: Mg = 2, S = 2
Ions formed: Mg = -2, S = +2
Atoms: K & F
Valence Electrons: K = 1, F = 7
Electron transfer from/TE: K = 1, F = 1
Ions formed: K = -1, F = +1
Atoms: Al & Cl
Valence Electrons: Al = 3, Cl = 7
Electron transfer from/TE: Al = 1, C = 1
Ions formed: Al = -1, Cl = +1
Atoms: Na + O
Valence Electrons: Na = 1, O = 6
Electron transfer from/TE: Na = 1, O = 2
Ions formed: Na = -1, O = +2
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Answers & Comments
2. Ca + O = CaO
Atoms: Ca & O
Valence Electrons: Ca = 2, O = 6
Electron transfer from/TE: Ca = 2, O = 2
Ions formed: Ca = +2, O = -2
3. Be + F = BeF2
Atoms: Be & F
Valence Electrons: Be = 2, F = 7
Electron transfer from/TE: Be = 1, F = 8
Ions formed: Be = -1, F = +8
4. Mg + S = MgS
Atoms: Mg & S
Valence Electrons: Mg = 2, S = 6
Electron transfer from/TE: Mg = 2, S = 2
Ions formed: Mg = -2, S = +2
5. K + F = KF
Atoms: K & F
Valence Electrons: K = 1, F = 7
Electron transfer from/TE: K = 1, F = 1
Ions formed: K = -1, F = +1
6. Al + Cl = AlCl3
Atoms: Al & Cl
Valence Electrons: Al = 3, Cl = 7
Electron transfer from/TE: Al = 1, C = 1
Ions formed: Al = -1, Cl = +1
7. Na + O = Na2O
Atoms: Na + O
Valence Electrons: Na = 1, O = 6
Electron transfer from/TE: Na = 1, O = 2
Ions formed: Na = -1, O = +2
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