1.0Learning & Education Portalhttps://astan.lk/al_virtualclassroomAdminhttps://astan.lk/al_virtualclassroom/author/astan-preceptor1/Electronic configuration - Learning & Education Portalrich600338<blockquote class="wp-embedded-content" data-secret="2rSUGKfOtc"><a href="https://astan.lk/al_virtualclassroom/electron-stability/">Electronic configuration</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://astan.lk/al_virtualclassroom/electron-stability/embed/#?secret=2rSUGKfOtc" width="600" height="338" title="“Electronic configuration” — Learning & Education Portal" data-secret="2rSUGKfOtc" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
/* <![CDATA[ */
/*! This file is auto-generated */
!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);
//# sourceURL=https://astan.lk/al_virtualclassroom/wp-includes/js/wp-embed.min.js
/* ]]> */
</script>
Principles and rules relevant to the filling up pattern of electrons Hund’s rule Orbitals of the same energy (degenerate) are occupied by electrons singly so that their spins are parallel to make the maximum number of unpaired electrons and then doubly with their spins anti parallel. Pauli’s exclusion principle This principle states that no orbital […]http://astan.lk/al_virtualclassroom/wp-content/uploads/2017/01/subshells-diagram.jpg