{"id":17659,"date":"2015-07-07T09:30:02","date_gmt":"2015-07-07T08:30:02","guid":{"rendered":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/?p=17659"},"modified":"2015-07-09T19:10:14","modified_gmt":"2015-07-09T18:10:14","slug":"how-many-elements-are-there","status":"publish","type":"post","link":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/?p=17659","title":{"rendered":"How many elements are there?"},"content":{"rendered":"<p>I am currently reading <a href=\"http:\/\/www.amazon.co.uk\/gp\/product\/0552778052?keywords=Richard%20Dawkins&amp;qid=1436258161&amp;ref_=sr_1_3&amp;s=books&amp;sr=1-3\">&#8220;The Magic Of Reality&#8221;<\/a> by Richard Dawkins. In this book, he writes that there are about 100 different kinds of elements of which only about 90 occur in nature.<\/p>\n<p>I wondered what is the exact number of elements known to us. It seems that the answer is 118 &#8211; see <a href=\"http:\/\/education.jlab.org\/qa\/element.html\">here<\/a>.<\/p>\n<p>A fuller description is found on Wikipedia which notes that:<\/p>\n<blockquote><p>&#8220;As of April 2015, 118 elements have been identified, the latest being ununseptium in 2010. Of these, only the first 98 are known to occur naturally on Earth; 80 elements are stable, while the others are radioactive, decaying into lighter elements over various timescales from fractions of a second to billions of years.&#8221;<\/p><\/blockquote>\n<p>You can find a list of all 118 elements <a href=\"https:\/\/en.wikipedia.org\/wiki\/Chemical_element#List_of_the_118_known_chemical_elements\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I am currently reading &#8220;The Magic Of Reality&#8221; by Richard Dawkins. In this book, he writes that there are about 100 different kinds of elements of which only about 90 occur in nature. I wondered what is the exact number of elements known to us. It seems that the answer is 118 &#8211; see here. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-17659","post","type-post","status-publish","format-standard","hentry","category-science-technology"],"_links":{"self":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/posts\/17659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17659"}],"version-history":[{"count":6,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/posts\/17659\/revisions"}],"predecessor-version":[{"id":17674,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/posts\/17659\/revisions\/17674"}],"wp:attachment":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17659"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}