https://padlet.com/neke741/92earcploeip Made by Nelson & Albert en-us 2017-10-05 17:07:17 UTC 2026-01-31 23:28:06 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Carfront.png neke741 https://padlet.com/neke741/92earcploeip/wish/194414689 The lanthanides are the elements with atomic numbers from 57 to 71. These 15 metals (along with scandium and yttrium) are often called the rare earth elements. They are all silvery-white metals which are often found in the same ores. They are called the lanthanides because they exhibit similar chemical properties to lanthanum, the first element in the group. ]]> 2017-10-05 17:24:48 UTC https://padlet.com/neke741/92earcploeip/wish/194414689 neke741 https://padlet.com/neke741/92earcploeip/wish/194416837 Actinides are the 15 elements with atomic numbers from 89 to 103. They are named after the first element in the series, actinium. The actinides group includes mostly man-made elements with only a few exceptions such as uranium and thorium. The actinides are most known for the elements uranium and plutonium which are used in nuclear reactors and nuclear bombs. ]]> 2017-10-05 17:29:13 UTC https://padlet.com/neke741/92earcploeip/wish/194416837 neke741 https://padlet.com/neke741/92earcploeip/wish/194418908 2017-10-05 17:33:03 UTC https://padlet.com/neke741/92earcploeip/wish/194418908 neke741 https://padlet.com/neke741/92earcploeip/wish/194419511 http://study.com/academy/lesson/lanthanides-definition-properties.html]]> 2017-10-05 17:34:14 UTC https://padlet.com/neke741/92earcploeip/wish/194419511