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15 questions from this quiz
Chemical union of 2+ elements
Chemical bonds
To attain stable electron config
Combining power of an element
4
+1 and +2
Iron(II) or ferrous
Cr3+Cr³⁺Cr3+
Powerful oxidising agent
Close energy levels of s & d orbitals
Lighter than air & non-flammable
Protects molten metal from O2O₂O2 & N2N₂N2
8
Atoms want 8 e⁻ in outer level
Ca2+Ca²⁺Ca2+ needs 2 Cl−Cl⁻Cl− to balance charge
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