<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Thu, 07 May 2026 16:22:32 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/created/soddy/rss.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[Lesson #16 Isotopes and Isotopes of hydrogen]]></title><description><![CDATA[Isotopes and Isotopes of hydrogen: Since both the atom have same atomic number, they must be the atoms of the same element and are called isotopes. The word isotopes was first used by soddy.It is a Greek]]></description><link>http://direct.ecency.com/chemistry/@bioysteem/lesson-16-isotopes-and-isotopes-of-hydrogen</link><guid isPermaLink="true">http://direct.ecency.com/chemistry/@bioysteem/lesson-16-isotopes-and-isotopes-of-hydrogen</guid><category><![CDATA[chemistry]]></category><dc:creator><![CDATA[bioysteem]]></dc:creator><pubDate>Thu, 10 May 2018 18:30:24 GMT</pubDate><enclosure url="https://images.ecency.com/p/23KQwnti57stsAqnmyxQN5QPZRZvTFiCDfL7NC8SaXCTGus9AzDgRAvM74GpizgDvq1M5EuLoAHjRczLe9fXs8iNkSPH74a?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>