https://padlet.com/3045491/i5d2ebmsrgrd en-us 2017-12-06 19:16:56 UTC 2024-10-14 20:39:42 UTC hello@padlet.com 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213876129 A period is the name given to a horizontal row of the periodic table

https://www.chemicool.com/definition/period.html

]]> 2017-12-06 19:22:33 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213876129 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213877786  is a column of elements in the periodic table of the chemical elements.

https://en.wikipedia.org/wiki/Group_(periodic_table)

]]> 2017-12-06 19:25:50 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213877786 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213878568  any of the group of univalent metals 

www.dictionary.com/browse/alkali-metal

]]> 2017-12-06 19:27:29 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213878568 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213879273 any of the group of bivalent metals

www.dictionary.com/browse/alkaline-earth-metal

]]> 2017-12-06 19:28:54 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213879273 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213880546 any of the series of fifteen metallic elements from lanthanum to lutetium in the periodic table.


]]> 2017-12-06 19:31:40 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213880546 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213881615 any of the series of fifteen metallic elements from actinium (atomic number 89) to lawrencium (atomic number 103) in the periodic table. They are all radioactive, the heavier members being extremely unstable and not of natural occurrence.


]]> 2017-12-06 19:33:49 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213881615 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213882215 any of the set of metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table, e.g., iron, manganese, chromium, and copper. Chemically they show variable valence and a strong tendency to form coordination compounds, and many of their compounds are colored.


]]> 2017-12-06 19:34:59 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213882215 3045491 https://padlet.com/3045491/i5d2ebmsrgrd/wish/213882730 any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (18) of the periodic table. They were long believed to be totally unreactive but compounds of xenon, krypton, and radon are now known.


]]> 2017-12-06 19:35:59 UTC https://padlet.com/3045491/i5d2ebmsrgrd/wish/213882730