Cov txheej txheem:
Video: Koj puas nco qab tus lej atomic ntawm thawj 20 lub ntsiab lus li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Mnemonic Device:
- Zoo siab Henry Nyob Ib sab ntawm Boron Tsev, Ze Peb Tus Phooj Ywg Nelly Nancy MgAllen. Silly Patrick nyob ze.
- Ntawm no Nws nyob hauv qab txaj khaub ncaws, tsis muaj dab tsi nyob, xav tias ntshai, Naughty Margret Ib txwm Sighs, "Thov Txhob Clowning Ib puag ncig" (18 cov ntsiab lus )
- Yuav Ua Li Cas Nws Nyiam Dais Los Ntawm Lub khob tsis dhau.
Yog li ntawd, koj puas nco qab tus lej atomic ntawm thawj 30 lub ntsiab lus li cas?
Nov yog qhov ua kom yuam kev kom nco qab 1 txog 30 lub ntsiab lus nrog lawv cov lej atomic, atomic mass thiab lub npe
- Rau kev nco qab lub npe ntawm cov ntsiab lus ntawm atomic tooj 21 txog 30, Mnemonics yog raws li nram no:
- Tam sim no, Trick kom nco ntsoov atomic loj ntawm 21 txog 30 lub ntsiab lus:
- Trick: Ob npaug ntawm Atomic tooj + Khawv koob no.
Ib tug kuj yuav nug, dab tsi yog tus lej 4 ntawm lub rooj zaum? Cov keeb nrog atomic nrv 4 yog beryllium, uas txhais tau hais tias txhua lub atom ntawm beryllium muaj 4 protons. Lub atom ruaj khov yuav muaj 4 neutron thiab 4 electrons. Varying cov tus lej ntawm neutrons hloov cov isotope ntawm beryllium, thaum sib txawv cov tus lej ntawm electrons tuaj yeem ua beryllium ions.
Ntxiv mus, dab tsi yog thawj 20 lub ntsiab lus hauv kev txiav txim?
Cov no yog thawj 20 lub ntsiab lus, teev nyob rau hauv kev txiav txim:
- H - Hydrogen.
- Nws - Helium.
- Lithium roj teeb.
- Ua - Beryllium.
- B - Boron.
- C - Cov pa roj carbon.
- N - Nitrogen.
- O - Cov pa.
Peb tuaj yeem nrhiav Valency li cas?
Cov valency ntawm ib lub atom yog sib npaug rau cov xov tooj ntawm electrons nyob rau hauv lub plhaub sab nraud yog tias tus lej ntawd yog plaub lossis tsawg dua. Txwv tsis pub, cov valency yog sib npaug rau yim rho tawm tus naj npawb ntawm electrons nyob rau hauv lub plhaub sab nrauv. Ib zaug koj paub cov tus naj npawb ntawm electrons, koj tuaj yeem yooj yim xam tus valency.
Pom zoo:
Lub ntsiab lus ntawm lub hauv paus lo lus meter nyob rau hauv lo lus tus pas ntsuas kub yog dab tsi?
Lub hauv paus chiv keeb ntawm lo lus 'Thermometer' Qhov thib ob ntawm lo lus, 'meter', los ntawm Fabkis -mètre (uas muaj nws cov hauv paus hauv lub post-classical Latin: -meter, -metrumand lub ancient Greek, -Μέτρο ν, lossis metron, uas txhais tau tias ntsuas qee yam, xws li qhov ntev, qhov hnyav, lossis dav)
Koj puas nco qab cov ntsiab lus hauv pawg 18 li cas?
Cov pab pawg muaj xws li Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), thiab cov xov tooj cua Radon (Rn). Mnemonic rau Pab Pawg 18: Nws Tsis Tuaj Txog; Kara Xero Run pe out
Yuav ua li cas koj thiaj nrhiav tau cov lej ntawm cov lej lej lossis cov lej geometric?
Cov mis rau qhov suav ntawm n cov ntsiab lus ntawm geometric ib ntus yog muab los ntawm Sn = a[(r^n - 1)/(r - 1)], qhov twg a yog thawj lub sij hawm, n yog lub sij hawm tus lej thiab r yog tus qhov piv txwv
Koj puas nco qab cov ntsiab lus D block ntawm lub rooj zaum?
D-block ntsiab nws suav nrog Lutetium (Lu), Hafnium (Hf), Tantalum (Ta), Tungsten (W), Rhenium (Re), Osmium (Os), Iridium (Ir), Platinum (Pt), Kub (Au thiab Mercury (Hg). Mnemonic for Period 6: L(u)a HafTa Warna Reh Us(Os) Irritating Popat ke saath Aur Hoj(g)a pagal
Dab tsi yog cov lej thiab cov lej rational Yuav ua li cas cov ntsiab lus kos rau ntawm lub dav hlau sib koom tes?
Raws li peb tau hais, cov ntsiab lus ntawm lub dav hlau sib koom ua ke yog sawv cev raws li (a, b), qhov twg a thiab b yog tus lej lej. Rational cov lej yog cov lej uas tuaj yeem sau ua feem, p / q, qhov p thiab q yog tus lej. Peb hu rau x-coordinate ntawm lub point thiab peb hu b tus y-coordinate ntawm lub point