{"version":"1.0","provider_name":"Chemuza","provider_url":"https:\/\/chemuza.org\/nl","author_name":"Redactie","author_url":"https:\/\/chemuza.org\/nl\/author\/redactie\/","title":"Polonium-Chemuza","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"4Mpz5SDUjN\"><a href=\"https:\/\/chemuza.org\/nl\/polonium\/\">Polonium<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/chemuza.org\/nl\/polonium\/embed\/#?secret=4Mpz5SDUjN\" width=\"600\" height=\"338\" title=\"&#8220;Polonium&#8221; &#8212; Chemuza\" data-secret=\"4Mpz5SDUjN\" 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":"Polonium is een radioactief element dat van nature in minimale concentraties in de aardkorst aanwezig is. Het is zeer vluchtig en heeft een laag smeltpunt. Bovendien bevat de samenstelling 41 giftige isotopen, daarom moet er met uiterste voorzichtigheid mee worden omgegaan. Leer meer over de kenmerken ervan, wie het heeft ontdekt, de oorsprong van de ... Lees verder"}