Cov yam ntxwv zoo
Cov mis mos rau monoalkenes yog CₙH₂ₙ (n Ntau dua lossis sib npaug rau 2). Ob daim ntawv cog lus muaj ib qho σ (sigma) daim ntawv cog lus thiab ib qho yooj yim tawg π (pi) daim ntawv cog lus; cov carbons koom nrog hauv ob daim ntawv cog lus yog sp²-hybridized, thiab cov atoms cuam tshuam nyob hauv tib lub dav hlau.
Lawv nthuav tawm cov txheej txheem isomerism (carbon saw thiab ob -bond txoj hauj lwm isomers) thiab, vim muaj kev txwv kev sib hloov ntawm ob daim ntawv cog lus, *cis-trans* (geometric) isomerism.
Physicochemical yam ntxwv
Lub cev muaj zog: C₂–C₄ alkenes yog cov pa roj hauv chav sov; lawv yog insoluble nyob rau hauv dej tab sis yooj yim soluble nyob rau hauv cov organic solvents, muaj densities qis dua dej, thiab nthuav qhia melting thiab boiling cov ntsiab lus uas nce nrog cov carbon atoms.
Cov khoom siv tshuaj: Vim yog qhov yooj yim tawg π daim ntawv cog lus, lawv muaj ntau dua reactive dua alkanes. Lawv tau txais peb yam tseem ceeb ntawm cov tshuaj tiv thaiv- ntxiv (raws li Markovnikov txoj cai), oxidation, thiab polymerization-thiab tuaj yeem decolorize bromine dej thiab acidic poov tshuaj permanganate tov.
