{"version":"1.0","provider_name":"Chemuza","provider_url":"https:\/\/chemuza.org\/nl","author_name":"Redactie","author_url":"https:\/\/chemuza.org\/nl\/author\/redactie\/","title":"Aardalkalimetalen van het periodiek systeem - Chemuza","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"MkdYYclkYK\"><a href=\"https:\/\/chemuza.org\/nl\/aardalkalimetalen\/\">Aardalkalimetalen van het periodiek systeem<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/chemuza.org\/nl\/aardalkalimetalen\/embed\/#?secret=MkdYYclkYK\" width=\"600\" height=\"338\" title=\"&#8220;Aardalkalimetalen van het periodiek systeem&#8221; &#8212; Chemuza\" data-secret=\"MkdYYclkYK\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/chemuza.org\/nl\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"Aardalkalimetalen zijn een groep elementen die zich in de tweede kolom van het periodiek systeem bevinden. Ze omvatten beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) en radium (Ra). Deze metalen hebben twee elektronen in hun buitenste schil, [1] waardoor ze chemisch reactief zijn, maar niet zo reactief als de alkalimetalen , die ... Lees verder","thumbnail_url":"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/tableau-periodique-des-metaux-alcalino-terreux.jpg"}