Me pēhea te pānui i te ripanga ā-pūmotu: He aratohu whānui
Ko te ripanga ā-pūmotu tētahi o ngā taputapu tino rongonui, tino whai hua hoki i roto i te ao matū. E 118 ngā huānga kua whakaūtia i tēnei rā, he whakaritenga ripanga paerewa o ngā huānga matū, e whakarato ana i ngā mōhiotanga nui ki ngā kaipūtaiao, ki ngā kaiako, me ngā ākonga i roto i te tirohanga poto. Ko te whāinga o tēnei tuhinga he tuku i tētahi aratohu taipitopito engari e mārama ana mō te pānui me te whakamārama i te ripanga ā-pūmotu.
He Kupu Whakataki ki te Ripanga Āhuatanga
I hangaia tuatahitia te ripanga ā-pūmotu e Dmitri Mendeleev i te tau 1869. I whakarite ia i ngā huānga mā te papatipu ngota, ā, i kite ia ka puta anō ētahi āhuatanga i ia wā. I ēnei rā, ko te ripanga ā-pūmotu o ēnei rā kua whakaritea mā te tau ngota (te maha o ngā porotini i roto i te karihi o te ngota), kaua mā te papatipu ngota. Ko te whakatakotoranga o te ripanga ā-pūmotu e whakaatu ana i ngā tauira auau e āwhina ana i ngā kaipūtaiao ki te matapae i ngā āhuatanga o ngā huānga.
Te Hanganga o te Ripanga Āhuatanga
Kua wehea te ripanga ā-pūmotu ki ngā rarangi me ngā pou e mōhiotia ana ko ngā wā me ngā rōpū.
– Ngā Wā: Koinei ngā rarangi whakapae i runga i te tēpu. E rite ana ia wā ki te taumata pūngao teitei rawa atu o te irahiko i roto i te ngota o taua huānga.
– Ngā Rōpū: Koinei ngā pou poutū. He rite tonu ngā āhuatanga matū o ngā huānga o te rōpū kotahi nā te mea he rite te maha o ngā irahiko valence.
Wae Waeine
Anei ētahi wāhanga matua ka kitea e koe i runga i tētahi ripanga ā-pūmotu paerewa:
– Tau Atomika: Kei runga ake i te tohu huānga tēnei tau, e ōrite ana ki te maha o ngā porotona i roto i te ngota.
– Tohu Huānga: Ko ia huānga e tohuhia ana e tētahi whakarāpopototanga reta kotahi, e rua rānei, e ahu mai ana i tōna ingoa Ingarihi, Latina rānei.
– Papatipu Atomika: E whakaaturia ana i raro i te tohu huānga, e tohu ana tēnei i te papatipu toharite o ngā ngota o tētahi huānga, e whakaatu ana i ngā momo isotope me tō rātou nui.
– Ingoa Huānga: Ko te ingoa whaimana o te huānga, e rārangihia ana i raro i te papatipu ngota.
Te Mārama ki ngā Poraka
Ka taea te wehewehe i te ripanga ā-pūmotu kia whā ngā poraka motuhake: te poraka-s, te poraka-p, te poraka-d, me te poraka-f, e tohu ana i ngā momo porowhita rerekē e nohoia ana e ngā irahiko valence o tētahi huānga.
– poraka-s: Kei roto ko ngā Rōpū 1 me te 2, me te Hauwai me te Hīriama. Kei roto i te porowhita-s ngā irahiko o waho rawa o ngā huānga o tēnei poraka.
– poraka-p: Kei roto ko ngā Rōpū 13 ki te 18. I konei, ka noho ngā irahiko o waho rawa ki ngā porowhita ap.
– poraka-d: Kei roto ko ngā Rōpū 3 ki te 12, e kiia ana ko ngā konganuku whakawhiti, kei roto ngā irahiko o waho rawa i ngā porowhita-d.
– poraka-f: E mōhiotia ana ko ngā lanthanide me ngā actinide, ka whakatakotoria ēnei ki raro i te tēpu matua, ā, ka uru atu ki te whakakī i ngā porowhita-f.
Ngā Āhuatanga o te Rōpū
Ngā Konganuku Kawakore (Rōpū 1)
He tino tauhohe ēnei konganuku, tae atu ki ngā huānga pēnei i te Lithium (Li) me te Sodium (Na), inā koa ki te wai. Kotahi te irahiko valence o ēnei, ā, ka ngawari te ngaro atu i tēnei irahiko, ka hanga he iona +1.
Ngā Konganuku Whenua Kawakore (Rōpū 2)
Kei roto i tēnei rōpū ko te Beryllium (Be) me te Magnesium (Mg). He tauhohe anō hoki ēnei konganuku engari he iti ake te tauhohenga i ngā konganuku alkali. E rua ā rātou irahiko valence, ā, he maha ngā wā ka hangaia he iona +2.
Ngā Konganuku Whakawhiti (Rōpū 3-12)
Ko ēnei konganuku, pērā i te Rino (Fe) me te Parahi (Cu), e tohuhia ana e tō rātou kaha ki te hanga i ngā āhua waikura rerekē me ngā matū tae. He maha ngā wā he teitei ngā ira rewa, ā, he pai hoki hei kawe hiko.
Ngā Halogen (Rōpū 17)
He tino tauhohe ngā halogens, tae atu ki te Fluorine (F) me te Chlorine (Cl). E whitu ā rātou irahiko valence, ā, ka whiwhi i te kotahi irahiko hei hanga i ngā katote -1.
Ngā Hau Rangatira (Rōpū 18)
He tino pumau ngā huānga pēnei i te Hēriuma (He) me te Neon (Ne), ā, kāore e tauhohe nā te mea he anga katoa ō rātou. He hau ēnei i te pāmahana rūma, ā, he maha ngā wā e whakamahia ana mō te rama me te pouaka whakamātao.
Ngā Auahatanga o te Wā
Ka rerekē pea ētahi āhuatanga o ngā huānga i roto i tētahi wā, i tētahi rōpū rānei, i runga i te āhua e taea te matapae. Anei ētahi au matua:
– Te Whānuitanga o te Atomika: Ka heke te nuinga o tēnei i roto i tētahi wā mai i te maui ki te matau nā te pikinga o te utu karihi e kukume ana i ngā irahiko kia tata atu ki te karihi. I tētahi atu taha, ka piki ake ki raro i tētahi rōpū ina tāpirihia he anga irahiko anō.
– Pūngao Whakakotahitanga: Ka piki ake te pūngao e hiahiatia ana hei tango i te irahiko mai i te ngota puta noa i tētahi wā nā te nui ake o te utu karihi. Ka heke iho i tētahi rōpū i te mea ka māmā ake te tango i ngā irahiko o waho mā te parenga irahiko.
– Te irahiko-kore: Ka piki ake te kaha o te ngota ki te kukume i ngā irahiko i roto i te hononga matū puta noa i te wā, ka heke iho i raro i te rōpū, ko te Hūroine (F) te huānga tino irahiko-kore.
Whakamahinga Mahi
Ehara te ripanga ā-pūmotu i te taputapu ariā noa iho; he whānuitia ngā tono mahi a ia i roto i ngā mara maha:
– Matū: Te matapae i ngā tauhohenga me ngā pūhui, te mārama ki ngā āhuatanga o ngā huānga.
– Rongoā: Te whakawhanake i ngā rongoā me ngā maimoatanga, pēnei i te whakamahi i ngā isotope irahiko i roto i te maimoatanga mate pukupuku.
– Hangarau: Te kōwhiringa rauemi mō ngā tono rerekē i runga i ngā āhuatanga pēnei i te kawe hiko, te tauhohenga, me te kaha.
– Pūtaiao Taiao: Te mārama me te aro atu ki te parahanga, te hangarua, me te whakamahinga rauemi tauwhiro.
Opaniraa
He taputapu kaha te ripanga ā-pūmotu e kapi ana i te nui o ngā mōhiotanga mō ngā huānga matū me ō rātou whanaungatanga. Mā te mārama ki tōna hanganga me ngā au e whakakitea ana e ia, ka taea e koe te matapae i te whanonga o ngā huānga me ō rātou pūhui. Ahakoa he ākonga koe e tīmata ana ki te ako matū, he tohunga i tētahi mara e pā ana, he hinengaro pākiki noa iho rānei, ko te mōhio ki te ripanga ā-pūmotu he taahiraa nui i roto i tō haerenga pūtaiao.
