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Questions and Answers
Which element from Group 4A is used as a reducing agent in the preparation of many metals?
Which element from Group 4A is used as a reducing agent in the preparation of many metals?
- Lead
- Tin
- Carbon (correct)
- Germanium
Which element from Group 4A exhibits catenation and can form multiple bonds with itself?
Which element from Group 4A exhibits catenation and can form multiple bonds with itself?
- Carbon (correct)
- Tin
- Germanium
- Lead
Which element from Group 4A forms stannates and plumbates upon reaction with a base?
Which element from Group 4A forms stannates and plumbates upon reaction with a base?
- Lead
- Carbon
- Tin (correct)
- Germanium
Which element from Group 4A is exclusively nonmetallic in character and is an essential element of living matter?
Which element from Group 4A is exclusively nonmetallic in character and is an essential element of living matter?
Which element from Group 4A has oxides and hydroxides that are amphoteric in nature?
Which element from Group 4A has oxides and hydroxides that are amphoteric in nature?
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Study Notes
Group 4A: Carbon/Crystallogens Family and Pharmaceutical Use Summary
- Department of Pharmacy's objective: comprehensively understand elements and compounds in Group 4A and their pharmaceutical use
- Carbon: used as a reducing agent in preparing metals, relatively inert at room temperature but combines with O2, X2, and other non-metals
- Ge and Sn: active metals, displace H from acids and combine with most metals
- Oxides and hydroxides of Sn and Pb: amphoteric, +4 oxides form stannates (SnO3-2) and plumbates (PbO3-2) when reacting with a base
- Carbon: fourth most abundant element, exclusively nonmetallic, essential in living matter, fundamental constituent of animal and vegetable tissue, exhibits catenation forming multiple bonds with itself
- Carbon allotropes: crystalline diamond (tetrahedral, purest native form), graphite (planar, used as lubricant)
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