Francium chemical mmewere: e ji mara na akụkọ ihe mere eme nke chọpụtara

Chemical mmewere francium (Fr 87) - otu n'ime ndị oge Mendeleyev ọcha. Site 1925, ọ bụ otu n'ime ihe anọ ọcha unfound. Nke a bụ hardest na kasị ike alkali metal dị na ọdịdị, na ọ bụ ihe ndị kasị ọkara ndụ ẹdude kemịkal. Nke a bụ ka ala na nuclear kwụsie ike eme ka eziokwu ahụ bụ na nke a ogologo oge, ọ gaghị ekwe omume maka French Open, onye ịdị adị buru amụma site Mendeleev fọrọ nke nta a na narị afọ tupu a natara.

History nke chọpụtara a chemical mmewere France

Ọ Teknụzụ Njikwa nke dakwasiri akara aka nke a nwaanyị, onye aha ya bụ Marguerite Perret. The search nke umi nke dabeere na Mendeleev usoro. Dabere bekee gbara agbata obi № 87, iche iche hypotheses tinye n'ihu banyere Njirimara nke metal:

• n'ihi na eziokwu na cesium coterminous agbaze na ụlọ okpomọkụ, ọ na-chere na 87 nke mmewere ga-agbaze na ala okpomọkụ;
• e chere na ọ ga-emetụta mmiri mmiri ọla dị ka cesium ma ọ bụ mercury;
• Anyị na-etinye na-atụ a amụma banyere ya radioactivity.

Site na njedebe nke 1938 na-achọ umi sonyeere Marguerite Pere. Ọ lekwasịrị anya na Alfa ahụ enwupụta si actinium. Ọ na-ọma kpochara si umi nke dị iche iche adịghị, na-ahapụ nanị a dị ọcha mmewere. Mgbe ọtụtụ chemical agwọ ọrịa nọgidere na-aka nke a na nkà mmụta sayensị na nne-aba n'anya nwere alkali nnu. Ọ na-atụ aro na ọ bụghị redioaktivu, ma mgbe evaporation nke ọma ghọrọ anya beta ọrụ na a ọkara ndụ nke 22 nkeji. The nwaanyị aghọwo doro anya na ndị dị otú ahụ na ọnụego na-adabere na na omume nke ihe alkali mmewere.

Aga n'ihu ime nke Margarita ọma naanị n'oge mgbụsị akwụkwọ nke 1939. Dabere na ẹdude nomenclature, nwaanyị nyere 87-nke mmewere nke aha "Actinium-K", nke e mesịrị renamed na France na-echeta ebe ọ mụrụ. International Union of Pure na Applied Chemistry nakweere aha chepụtara site Marguerite Perret. Ebe ọ bụ na nke mbụ nke France.

Chemical mmewere Fr: e ji mara

Nke a bụ hardest na kasị ike alkali metal nke na-adị na ọdịdị, na ọ bụ otu n'ime ndị kasị ọkara ndụ ẹdude kemịkal. Ndị fọdụrụ n'ezinụlọ-biri nke ya isotopes pụrụ ịchọta uranium mineral. Ya mere, a chemical mmewere francium nnọọ agụghị oké aghọta, ebe ọ bụ na erekasịchaala ngwa ngwa. Karịsịa ya nwere nnọọ elu radioactivity. Ma obere mmewere e nyochaworo, na hụrụ ndị na-esonụ Njirimara:

• ọkara ndụ nke ogologo ini isotope nke 22 nkeji;
• -agbaze okpomọkụ - 27 degrees;
• njupụta na ụlọ okpomọkụ nke 1,87 g / m ^3.

Nti eziokwu banyere France

Nke a bụ nke ikpeazụ chemical mmewere chọpụtara na ọdịdị. Ọ bụ nke kasị obere, n'ihi na ọ bụ na-ejighị n'aka na mgbari ngwa ngwa. Dị ka ndị ọkà mmụta sayensị, na chemical francium mmewere bụ ugbu a na ụwa dị nnọọ ego nke 30 grams. Ọ nwere ike ekewet mmiri mmiri ọla, ma ọ bụ a mmiri mmiri maka a obere oge. Mgbe a ole na ole sekọnd francium gbawara n'ime anụ ọcha, akpan akpan radium nwetara.

ngwa France

Ma, n'agbanyeghị elu volatility, a chemical mmewere bakwara uru. Ọ na-eji, ọ bụ ezie na ọ bụghị ọtụtụ. Mbụ, a chemical mmewere francium bara uru n'ihi na ịchọputa ihe na eke na actinium. Ọzọkwa, ekele nwere na laabu òké, ndị ọkà mmụta sayensị chọpụtara na ọ accumulates na ịza aza etuto ahụ, bụ nke na-akpa ogbo nke development. Ya mere, ọ ga-eji na n'oge nchoputa sarcoma. Ma ọmụmụ nke a mmewere na-aga n'ihu. Frances ọkà mmụta sayensị na-ekpughe ihe nke ya nzuzo.