List of elements having variable valency
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Some elements having variable valency are
1. Iron :
→ ferrous - Fe 2+
→ ferric - Fe 3+
2. Copper :
→ cuprous - Cu +
→ cupric - Cu 2+
3. Mercury
→ mercurous - Hg +
→ mercuric - Hg 2+
4. Gold
→ aurous - Au +
→ auric - Au 3+
5. Silver
→ argentous - Ag +
→ argentic - Ag 2+
6. Lead
→ plumbous - Pb 2+
→ plumbic - Pb 4+
7. Platinum
→ platinous - Pt 2+
→ platinic - Pt 4+
8. Tin
→ stannous - Sn 2+
→ stannic - Sn 4+
1. Iron :
→ ferrous - Fe 2+
→ ferric - Fe 3+
2. Copper :
→ cuprous - Cu +
→ cupric - Cu 2+
3. Mercury
→ mercurous - Hg +
→ mercuric - Hg 2+
4. Gold
→ aurous - Au +
→ auric - Au 3+
5. Silver
→ argentous - Ag +
→ argentic - Ag 2+
6. Lead
→ plumbous - Pb 2+
→ plumbic - Pb 4+
7. Platinum
→ platinous - Pt 2+
→ platinic - Pt 4+
8. Tin
→ stannous - Sn 2+
→ stannic - Sn 4+
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