https://padlet.com/briana_lee/gnkwcfwia39 Who created the periodic table and how did he organize it? en-us 2016-09-28 13:16:11 UTC 2016-09-28 13:18:41 UTC hello@padlet.com briana_lee https://padlet.com/briana_lee/gnkwcfwia39/wish/126945972 2016-09-28 13:18:41 UTC https://padlet.com/briana_lee/gnkwcfwia39/wish/126945972