{"id":853,"date":"2013-01-30T10:59:28","date_gmt":"2013-01-30T10:59:28","guid":{"rendered":"http:\/\/news-feday.16mb.com\/?p=853"},"modified":"2016-09-16T06:41:45","modified_gmt":"2016-09-16T06:41:45","slug":"sifat-fisik-dan-kimia-logam-alkali","status":"publish","type":"post","link":"https:\/\/www.syedara.com\/?p=853","title":{"rendered":"Sifat Fisik dan Kimia Logam Alkali"},"content":{"rendered":"<div>\n<p style=\"text-align: justify;\">Berikut ini adalah sifat-sifat logam alkali ditinjau secara fisik mau pun secara kimia:<\/p>\n<ul style=\"text-align: justify;\">\n<li>Unsur logam sangat reaktif dan merupakan reduktor yang\u00a0sangat kuat<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Berwarna putih keperakan dan berupa logam padat (kecuali\u00a0Cs yang berwujud cair pada siang hari)<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Titik leleh rendah, lunak dan dapat ditempa<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Di alam tidak ditemukan dalam keadaan bebas tapi dalam\u00a0bentuk senyawa<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Keelektronegatifan tergolong rendah<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Dapat larut dan bereaksi dengan air<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Dalam satu golongan dari atas ke bawah: titik didih,\u00a0titik lebur, dan energi ionisasinya semakin berkurang, kereaktifan semakin\u00a0bertambah (Fr &gt; Cs &gt; Rb &gt; K &gt; Na &gt; Li)<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Ionnya bermuatan positif satu<\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li>Bereaksi hebat dengan air menghasilkan gas hidrogen dan\u00a0hidroksida<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><!-- [if gte mso 9]><xml>\n<o:officedocumentsettings>\n<o:relyonvml><\/o:relyonvml>\n<o:allowpng><\/o:allowpng>\n<\/o:officedocumentsettings>\n<\/xml>< ![endif]--><\/p>\n<table class=\"MsoTableLightGridAccent6\" border=\"1\" width=\"489\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Keterangan <\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\" align=\"center\"><b>Li<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\" align=\"center\"><b>Na<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\" align=\"center\"><b>K<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\" align=\"center\"><b>Rb <\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\" align=\"center\"><b>Cs<\/b><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Nomor atom<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">3<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">11<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">19<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">37<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">55<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Konfigurasi elektron terluar<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">2s?<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">3s?<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">4s?<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">5s?<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">6s?<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Jari-jari atom (pm)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">152<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">186<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">227<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">247<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">265<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Energi ionisasi (kJ\/mol)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">520,2<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">495,8<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">418,8<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">403,0<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">375,7<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Keelektronegatifan <\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,98<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,93<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,82<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">0,82<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">0,79<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Afinitas elektron (kJ\/mol)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">59,63<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">52,867<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">48,384<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">46,884<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">45,505<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Potensial elektroda (E<\/b><b>?<\/b><b>)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">-3,040<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">-2,713<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">-2,924<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">-2,924<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">-2,923<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Titik leleh (K)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">453,54<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">370,81<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">336,65<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">311,89<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">301,4<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Titik didih (K)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">1620<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">1176,8<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">1047<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">961<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">951,4<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Rapatan (g\/cm<\/b><b>?<\/b><b> pada 20<\/b><b>?<\/b><b> C)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,534<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0, 971<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,862<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">1,532<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">1,873<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Kekerasan (Mohs)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,6<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,5<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">0,4<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">0,3<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">0,2<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Warna nyala<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">Merah tua<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">Kuning<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">Ungu<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">Merah biru<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">Biru<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"252\">\n<p class=\"MsoNormal\"><b>Daya hantar listrik (<\/b><b>pada <\/b><b> skala relatif terhadap perak 100)<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">17,1<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">33,2<\/p>\n<\/td>\n<td valign=\"top\" width=\"84\">\n<p class=\"MsoNormal\">22,0<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p class=\"MsoNormal\">12,4<\/p>\n<\/td>\n<td valign=\"top\" width=\"78\">\n<p class=\"MsoNormal\">7,76<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Berikut ini adalah sifat-sifat logam alkali ditinjau secara fisik mau pun secara kimia: Unsur logam sangat reaktif dan [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1281,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[285],"tags":[17,413,414,151],"class_list":["post-853","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artikel","tag-alkali","tag-kimia","tag-logam","tag-sifat"],"_links":{"self":[{"href":"https:\/\/www.syedara.com\/index.php?rest_route=\/wp\/v2\/posts\/853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.syedara.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.syedara.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.syedara.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.syedara.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=853"}],"version-history":[{"count":0,"href":"https:\/\/www.syedara.com\/index.php?rest_route=\/wp\/v2\/posts\/853\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.syedara.com\/index.php?rest_route=\/wp\/v2\/media\/1281"}],"wp:attachment":[{"href":"https:\/\/www.syedara.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.syedara.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.syedara.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}