Logam alkali: Béda antarrépisi

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Baris ka-51:
:[[Kalium|K]] + [[Amonia|NH<sub>3</sub>]] → K<sup>+</sup> + [[éléktron|e<sup>-</sup>]]
 
Kusabab leyuranana ngandung éléktron bébas, volumna jadi nambahan leuwih ti jumlah volum logam jeung amoniana. Ayana éléktron ogé ngajadikeun ieu leyuran alus salaku [[réduktor]] jeung [[konduktor (listrik)|konduktor listrik]].<!-- Ieu leyuran henteu stabil, sabab biasana robah jadi [[amida]]. Ieu réaksi, mun digancangkeun ku ayana [[katalis]] (biasana [[beusi (III) nitrat]]), dipaké pikeun ngahasilkeun [[amida natrium]]:
 
:2 [[SodiumNatrium|Na]] + 2 [[AmmoniaAmonia|NH<sub>3</sub>]] → 2 [[Sodium_amideAmisa natrium|NaNH<sub>2</sub>]] + [[HydrogenHidrogén|H<sub>2</sub>]]
The solution is not stable over long periods, and the dissolved alkali metal will react to form the corresponding [[amide]]. This reaction, when accelerated with a catalyst (usually [[iron(III) nitrate]]), is used for the production of [[sodium amide]]:
 
Amidana bisa diékstrak atawa dirobah jadi [[azida natrium]] ku cara ngabulukbukkeun [[oksida nitrogén]] kana leyuran amonia:
:2 [[Sodium|Na]] + 2 [[Ammonia|NH<sub>3</sub>]] → 2 [[Sodium_amide|NaNH<sub>2</sub>]] + [[Hydrogen|H<sub>2</sub>]]
 
:2 [[Sodium_amideamida natrium|NaNH<sub>2</sub>]] + [[Nitrous_oxideoksida natrium|N<sub>2</sub>O]] → [[Sodium_azideazida natrium|NaN<sub>3</sub>]] + [[Sodium_hydroxidenatrium hidroksida|NaOH]] + [[Ammoniaamonia|NH<sub>3</sub>]]
The amide can be extracted, or it can be converted to [[sodium azide]] by bubbling [[nitrous oxide]] through the ammonia solution:
 
:2 [[Sodium_amide|NaNH<sub>2</sub>]] + [[Nitrous_oxide|N<sub>2</sub>O]] → [[Sodium_azide|NaN<sub>3</sub>]] + [[Sodium_hydroxide|NaOH]] + [[Ammonia|NH<sub>3</sub>]]
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== Kacondongan ==
Logam-logam alkali mibanda sababaraha pola mun dipapay ti luhur ka handap - misalna waé éléktronégativitas nurun, réaktivitas naék, sarta nurunna titik lééh jeung golak. Dénsitasna biasana ngaronjat, iwal kalium nu hampang batan natrium.