Muaj 15 actinide ntsiab. Cov kev teeb tsa hluav taws xob ntawm cov actinides siv f sublevel, tshwj tsis yog lawrencium, d-block lub caij. Nyob ntawm koj txhais lus ntawm lub caij nyoog ntawm cov ntsiab lus, cov koob pib nrog actinium lossis thorium, txuas ntxiv mus rau lawrencium.
Muaj pes tsawg lanthanides?
Cov lanthanides (los yog lanthanons) yog ib pawg ntawm 15 cov ntsiab lus ntawm atomic tooj ntawm 57 txog 71 uas scandium (atomic tooj 21) thiab yttrium (atomic tooj 39) yog qee zaum suav nrog.
5 actinides yog dab tsi?
Qhov ntau tshaj lossis yooj yim synthesized actinides yog uranium thiab thorium, ua raws li plutonium, americium, actinium, protactinium, neptunium, thiab curium.
Muaj pes tsawg lanthanides thiab actinides muaj?
Cov lanthanides thiab actinides yog pawg ntawm cov ntsiab lus nyob rau hauv lub sijhawm. Lawv yog cov ntsiab lus uas feem ntau tau teev tseg hauv qab ntu tseem ceeb ntawm lub sijhawm teem sijhawm. Muaj peb caug tag nrho cov ntsiab lus hauv lanthanides thiab actinides. Lawv feem ntau hu ua "sab hauv kev hloov pauv hlau."
Vim li cas thiaj muaj 14 yam hauv actinides?
The f-Block
Kev teeb tsa hluav taws xob dav dav rau cov ntsiab lus hauv f block yog (n – 2)f 1- 14 ns 2. Lub xya orbitals ntawm f sublevel haum14 electrons, yog li qhov f block yog 14 lub ntsiab lus ntev. … Covactinides yog 14 lub ntsiab ntawm thorium (atomic tooj 90) rau lawrencium (atomic tooj 103).
