Tambayoyi Misali Game da Tsarin Atomic da Teburin Abubuwa na Lokaci-lokaci
Pendahuluan
Tsarin atomic da kuma teburin periodic elements su ne muhimman ra'ayoyi a fannin ilmin sunadarai wadanda suka zama ginshiki na fahimtar halaye da halayen abubuwa daban-daban. A cikin wannan labarin, za mu tattauna misalan matsalolin da suka shafi tsarin atomic da kuma teburin periodic elements, tare da cikakken bayani kan kowanne.
Tsarin Atom
Misali Tambaya ta 1: Tsarin Electron
Tambaya: Kayyade tsarin electron na atom ɗin Calcium (Ca) wanda ke da lambar atom 20.
Tattaunawa:
Calcium yana da adadin atomic na 20, ma'ana yana da electrons 20. Domin tantance tsarin electrons ɗinsa, muna buƙatar rarraba electrons bisa ga ƙa'idar Aufbau, wacce ke cike orbitals daga mafi ƙarancin matakin makamashi zuwa mafi girman matakin makamashi.
1. 1s^2 (Electrons 2)
2. 2s^2 (Electrons 2)
3. 2p^6 (Electrons 6)
4. 3s^2 (Electrons 2)
5. 3p^6 (Electrons 6)
6. 4s^2 (Electrons 2)
Don haka, tsarin electron na Calcium (Ca) shine 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2.
Misali Tambaya ta 2: Lambobin Kwatancen
Tambaya: Kayyade ƙimar adadin kwantum na electron na ƙarshe a cikin atom ɗin Oxygen (O) wanda ke da lambar atom 8.
Tattaunawa:
Oxygen yana da lambar atomic 8, don haka tsarin electrons ɗinsa shine:
1s^2 2s^2 2p^4
Electron na ƙarshe a cikin iskar oxygen yana cikin 2p orbital. Muna buƙatar tantance adadin quantum na wannan electron:
– Babban lambar adadi (n): 2 (domin yana cikin harsashi na biyu)
– Lambar adadi na Azimuthal (l): 1 (saboda p na orbital)
– Lambar magniti (m_l): -1, 0, +1 (zagayen p na iya samun alkibla uku)
– Lambar juyi (m_s): +1/2 ko -1/2 (elektrons na iya samun yanayin juyi guda biyu)
Ga electron na ƙarshe a cikin 2p^4, electrons ɗin ana cika su bisa ga ƙa'idar Hund, don haka za su mamaye ɗaya daga cikin alkiblar m_l. Misali, ga alkiblar m_l = 0, lambobin quantum sune:
– n = 2
– l = 1
– m_l = 0
– m_s = +1/2 ko -1/2 (ya danganta da juyawar electron)
Teburin Abubuwa na Lokaci-lokaci
Misali Tambaya ta 3: Halayen Abubuwa na Lokaci-lokaci
Tambaya: Kwatanta girman atom na sodium (Na) da chlorine (Cl) sannan ka bayar da dalilin bambancin girma.
Tattaunawa:
Sodium da chlorine suna cikin lokaci ɗaya (lokaci na 3) amma a cikin ƙungiyoyi daban-daban:
– Na yana cikin rukuni na 1
– Cl yana cikin rukuni na 17
Girman atomic (radius na atomic) yana raguwa daga hagu zuwa dama a tsawon wani lokaci saboda karuwar cajin nukiliya (ƙarin protons) yana haifar da ƙarin jan electrons a cikin harsashi ɗaya. Wannan yana sa a jawo harsashin electron kusa da tsakiya.
Saboda haka, girman atom ɗin sodium (Na) ya fi na chlorine (Cl) girma domin Na yana nan a farkon lokacin. A wata ma'anar, electrons na valence na Na sun fi na Cl yawa, don haka Na yana da babban radius na atomic.
Misali Tambaya ta 4: Lambar Iskar Oxidation
Tambaya: Kayyade adadin iskar shaka na sinadarin sulfur a cikin H2SO4.
Tattaunawa:
Domin tantance adadin sinadarin sulfur a cikin sinadarin sulfuric (H₂SO₄), muna bin ƙa'idodi don tantance adadin sinadarin:
– Hydrogen (H) gabaɗaya yana da adadin iskar shaka na +1.
– Oxygen (O) gabaɗaya yana da adadin oxidation na -2.
Bari mu ɗauka cewa adadin sinadarin sulfur a cikin H₂SO₄ shine x. Sannan bisa ga ƙa'ida, jimlar adadin sinadarin oxidation a cikin kwayar halitta ɗaya dole ne ya zama daidai da jimlar cajin kwayar halitta (wanda tsaka tsaki shine 0):
Adadin:
2(H) + 1(S) + 4(O) = 2(+1) + x + 4(-2) = 2 + x – 8 = 0
Ana ƙididdige x:
2 + x – 8 = 0
x - 6 = 0
x = +6
Don haka, adadin iskar shaka na sulfur (S) a cikin H₂SO₄ shine +6.
Sinadaran Amsawa
Misali Tambaya ta 5: Amsawa
Tambaya: Me yasa fluorine (F) ya fi chlorine (Cl) aiki?
Tattaunawa:
Yawan amsawar halogens (rukuni na 17) yana raguwa idan adadin atomic ya ƙaru. Fluorine ya fi chlorine amsawa saboda dalilai da dama da suka shafi tsarin atomic:
1. Makamashin Ionization:
Fluorine yana da ƙarfin ionization mafi girma fiye da chlorine, ma'ana yana da sauƙi ga ƙwayoyin fluorine su jawo hankalin electrons daga wasu ƙwayoyin.
2. Ƙarfin Lantarki:
Fluorine yana da matuƙar kusanci da electrons, wanda ke nufin yana samun electrons cikin sauƙi fiye da chlorine.
3. Girman Atom:
Fluorine yana da ƙaramin girman atomic fiye da chlorine. Elektrons na valence a cikin fluorine sun fi kusa da tsakiya, don haka jan hankalin electrostatic zuwa ga sabbin electrons ya fi girma.
Don haka, waɗannan abubuwa uku tare suna ƙara ƙarfin fluorine don mu'amala da wasu abubuwa, wanda hakan ke sa ya fi chlorine tasiri.
Kammalawa
Fahimtar tsarin atomic da kuma jadawalin periodic elements yana da matuƙar muhimmanci a fannin ilmin sunadarai. A cikin wannan labarin, mun tattauna misalai daban-daban na matsaloli tare da cikakkun bayanai. Waɗannan sun haɗa da tsarin electrons, lambobin quantum, halayen periodic elements, lambobin oxidation, da kuma amsawar sinadarai. Da fahimtar waɗannan ra'ayoyi sosai, za mu iya fahimtar halaye da halayen abubuwa daban-daban a cikin sararin samaniya.
