Cov lanthanides thiab actinides tsim ib pab pawg uas zoo li yuav luag tsis sib txuas los ntawm qhov seem ntawm lub sijhawm. Qhov no yog f block ntawm cov ntsiab lus, hu ua cov kev hloov pauv sab hauv. Qhov no yog vim txoj haujlwm tus lej raug ntawm Pawg 2 thiab 3 ntawm cov hlau hloov pauv.
Vim li cas lawv thiaj hu ua kev hloov pauv sab hauv?
Lo lus nug: Vim li cas lawv hu ua Cov Ntsiab Lus ntawm Kev Hloov Sab Hauv? Teb: Lawv muaj npe yog li vim lawv tshwm nyob rau hauv lub sij hawm tam sim ntawd tom qab actinium (Ac). Kaum plaub lub ntsiab lus los ntawm Th(90) mus rau Lw(103) tsim cov kab ke ntawm actinides thiab tseem hu ua qhov thib ob ntawm kev hloov pauv sab hauv.
Dab tsi yog hu ua cov kev hloov pauv sab hauv?
Lanthanides thiab actinides yog hu ua cov kev hloov pauv sab hauv vim lawv qhov chaw nyob hauv lub rooj zaum vim lawv qhov teeb tsa hluav taws xob. lawv yog cov pab pawg ntawm cov ntsiab lus uas tau pom raws li hauv qab ob kab ntawm lub rooj zaum.
Puas yog lanthanides inner transition elements?
Lub sijhawm 6 sab hauv kev hloov pauv hlau (lanthanides) yog cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium(Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (E), thulium (Tm), ytterbium (Yb), thiab lutetium (Lu).
Vim li cas lanthanides hu ua 4f ntsiab?
Zaj Lus Qhia
Lawv pib ntawm Lanthanum, uas muaj tus lej atomic 57, mus rauLutecium, uas muaj tus lej atomic 71. Lanthanides muaj cov qauv hluav taws xob dav dav ntawm hom (Xe)4f n 6s2. Lawv hu ua 4f yam raws li lawv tau ua tsis tiav 4f subshells.
