5B: Vanadium group | 6A: Oxygen group Flashcards
(38 cards)
Vanadium group
V, Nb, Ta
Insulin-mimetic effect (not used - metal’s toxicity)
vanadium
- Unaffected by body fluids (inert)
- Sheet form surgical repair of bones, nerve, tissue
tantalum
tantalum is also for the tx of:
hernia
Oxygen group/chalcogens
O, S, Se, Te, Po (OS Se Te Po)
most abundant element on earth/supports life; green cylinder
Oxygen (02-)
oxygen other terms
- dephlogisticated air
- empyreal air,
- acid former,
- yne
Oxides combines directly w/ elements except with the noble metals: ______________
Hg, Ag, Au & Pt family members
Properties of oxides
- metallic
- nonmetallic
- amphoteric
- chm reactive
3 allotropes of oxygen
- Nascent (0)
- Atmospheric/ molecular (02)
- Ozone (03) * powerful OA- bleach, disinfectant (more oxygen)
oxygen is used for the treatment of
hypoxia/asphyxia
100% 02, 2-3 atmosphere for treatment of hypoxia; speed up healing of CO poisoning, gangrene, stubborn wounds, and infections in which tissues are starved for oxygen
Hyperbaric O2
source of sulfur
Crude furnace or Calcacarone (Syn. by Frasch process)
Brimstone, Shulbari (Enemy of Cu), Asupre (tagalog)
sulfur
sulfur occurs in free state & in combination (____________,__________,__________)
sulfides, sulfite, sulfates
allotropes of sulfur
Alpha/ Rhombic S - at RT. Stable
Beta/ Monoclinic S - at equilibrium pt (96°C)
uses of sulfur
- Scabicide & keratolytic ointment/ lotion
- Antiseborrheic/ Anti-dandruff (SeS2)
- stimulates hair growth; depilatory/ veet (as thioglycolate)
- Stimulant, cathartic (as SO4^-2); fumigant
insoluble in CS2
- amorphous S
- liquid s
- plastic s
rubber-like
(sulfur)
plastic S
heating sat 160-180C
liquid S
(sulfur)
boiling S w/ lime and precipitating filtered soln w/ HCl very fine pale yellow powder, odorless, tastless CS2 solubility; readily dissolves
Precipitated S
Milk of sulfure, lac sulfur
Precipitated S
fine yellow powder w/ faint odor and taste CS2 solubility slowly and usually incompletely soluble
sublimed S
Flowers of sulfur with impurities
sublimed S