https://padlet.com/16065071/v22ucb9vdc441wh8 Periodic Table en-us 2021-06-02 23:21:51 UTC 2025-10-24 22:17:04 UTC hello@padlet.com 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581043631 2021-06-03 00:27:05 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581043631 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581055832 2021-06-03 00:32:48 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581055832 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581057547 2021-06-03 00:33:34 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581057547 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581078336 Aaryashree Sapkota]]> 2021-06-03 00:42:58 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581078336 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581085099 The periodic table has been around for over 150 years. It was first arranged in the way it is today by Dmitri Mendeleev, also known as the 'father' of the periodic table, back in 1869. He even left gaps in places since he realized there were elements that was yet to be discovered during his time.

]]> 2021-06-03 00:45:50 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581085099 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581098249 Our period table is sorted in order of increasing atomic numbers going to the left. Each row on the periodic table are called periods. In each period, the number of electrons in the atom of the element increases as you go down the row. The last one in the row, which makes up group 18, having a full shell of electrons.]]> 2021-06-03 00:51:06 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581098249 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581110575 In the periodic table, the arrangement of elements in a column is known as a group. Just like how every period has something in common, every group adds an additional shell to an atom. For example, from Lithium to Sodium, the number of shells goes from 2 to 3, but they still keep the same amount of electrons (1). ]]> 2021-06-03 00:56:16 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581110575 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581124968 2021-06-03 01:02:17 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581124968 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581125150 2021-06-03 01:02:22 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581125150 16065071 https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581133406 Ever since the creation of the periodic tables, there has been more and more discoveries of elements. Over the past 150 years, an over a hundred new elements have been found. Just in the past 10 years there has been an addition of 4+ new elements in the periodic table. There are still many elements waiting to be discovered.]]> 2021-06-03 01:06:03 UTC https://padlet.com/16065071/v22ucb9vdc441wh8/wish/1581133406