https://padlet.com/21027529_2/e27j75cbkv0rhbfa en-us 2022-10-21 04:39:51 UTC 2022-10-21 06:23:32 UTC hello@padlet.com 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350160093 2022-10-21 04:40:20 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350160093 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350161366 2022-10-21 04:42:01 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350161366 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350161412 2022-10-21 04:42:05 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350161412 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350162010 2022-10-21 04:42:35 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350162010 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350162626 forms metal oxide
_{X (s) + O2 (g) -> XO (s)}

]]> 2022-10-21 04:43:21 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350162626 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350163542 form metal hallides
_{X (s) + Cl2 (g) -> XCl2 (s)}]]> 2022-10-21 04:44:28 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350163542 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350163996 produces oxide + H2
_{X (s) + H2O (g) -> XO (s) + H2 (g)}]]> 2022-10-21 04:45:04 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350163996 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350164330 produces hydroxide + H2
_{X (s) + 2H2O (i) -> X(OH)2 (s) + H2 (g)}]]> 2022-10-21 04:45:29 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350164330 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350164788 ALL elements (except Be & Mg - least reactive) form metal hydroxide + H2
- Group 2 Hydroxides are more soluble down the group -> Hydroxides produced make water alkaline
_{X (s) + 2H2O (i) -> X(OH)2 (aq) + H2 (g)}]]> 2022-10-21 04:46:08 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350164788 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350164988 2022-10-21 04:46:23 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350164988 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350165337 becomes more reactive as it goes down due to the loss of 2 electron on the outer valence electron shell.]]> 2022-10-21 04:46:49 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350165337 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350165925 2022-10-21 04:47:33 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350165925 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166220 2022-10-21 04:47:58 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166220 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166315 Radium is the most reactive]]> 2022-10-21 04:48:06 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166315 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166336 2022-10-21 04:48:07 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166336 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166981 Beryllium is the least reactive]]> 2022-10-21 04:48:56 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350166981 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350167235 exist as diatomic molecules]]> 2022-10-21 04:49:16 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350167235 21027529_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350167318 decomposes on heating to produce Group 2 Oxide + CO2
- metal ions are bigger down the group (same charge) -> charge density dec. down the group -> carbonate ion less polarised -> thermally stable down the group ]]> 2022-10-21 04:49:24 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350167318 lisalisa08081998 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350167364 become less reactive going down the group.]]> 2022-10-21 04:49:26 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350167364 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350169146 physical state change from gas to solid down the group  

]]> 2022-10-21 04:51:53 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350169146 lisalisa08081998 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350169511 going down the group, Van der Waals forces between molecules are stronger]]> 2022-10-21 04:52:23 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350169511 lisalisa08081998 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350172299 The melting and boiling point of the halogens increases down the group.]]> 2022-10-21 04:55:49 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350172299 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350174442 Group 2 metal is soft and silver which is harder and denser than group 1 metals]]> 2022-10-21 04:58:15 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350174442 lisalisa08081998 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350175250 going down the group, lower tendency to be reduced, weak oxidizing agent ]]> 2022-10-21 04:59:15 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350175250 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350175378 Group 2 metals form cations with a charge of +2 by losing 2 electrons.]]> 2022-10-21 04:59:24 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350175378 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350176611 occurs when a halogen with strong oxidizing agent will displaces a halogen that has a lower oxidizing power from one of its compounds. 
-> e.g: F2 + 2HBr -> 2HF + Br2 ]]> 2022-10-21 05:00:49 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350176611 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350177042 loses electrons to other substances in a redox reaction and gets oxidized to a higher oxidation state]]> 2022-10-21 05:01:22 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350177042 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350178456 Barium is the strongest reducing agent and has the highest oxidization. 

]]> 2022-10-21 05:03:03 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350178456 210058781 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350179618 Beryllium is the weakest reducing agent and has the lowest oxidization.]]> 2022-10-21 05:04:30 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350179618 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350184162 form halides and hypohalides. 
-> E.g: Cl2 (g) + H2O (l) → HCl (aq) + HOCl (aq)

* fluorine (F2) is so electronegative, it can displace oxygen from water.



]]> 2022-10-21 05:09:53 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350184162 21019679_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350206146 number of electron shells remain the same, proton number increase, number of valence electrons increase]]> 2022-10-21 05:35:38 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350206146 21019679_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350206245 same number of valence electron, increase in number of electron shells]]> 2022-10-21 05:35:45 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350206245 21019679_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350210486 decreases as nuclear charge is higher and electrons are more attracted to the nucleus]]> 2022-10-21 05:41:25 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350210486 21019679_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350213802 increases due to increase in the electron shells and the valence electron are shielded by more electron shells down the group]]> 2022-10-21 05:45:47 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350213802 21019679_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350214695 increases as increase in protons across the period lead to stronger attraction to the valence electrons]]> 2022-10-21 05:46:50 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350214695 21019679_2 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350215936 decreases as increase in distance between the nucleus and valence electrons lead to a weaker attraction to the valence electrons]]> 2022-10-21 05:48:24 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350215936 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350221864 to form hydrogen halides
-> e.g. I2 (g) + H2 (g) -> 2HI (g)]]> 2022-10-21 05:55:31 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350221864 lisalisa08081998 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350222679
With hot alkali, disproportionation occurs
3Cl2 (aq) + 6NaOH (aq) -> 5NaCl (aq) + NaClO3 (aq) + 3H2O (l)]]> 2022-10-21 05:56:32 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350222679 21011364_3 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350225887
Cl2 (aq), Br2 (aq), and I2 (aq) will react with cold NaOH. 
-> The colour of the halogen solution will fade to colourless.
-> E.g: Cl2 (aq) + 2NaOH (aq) ® NaCl (aq) + NaClO (aq) + H2O (l)]]> 2022-10-21 06:00:19 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350225887 lisalisa08081998 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350226629    ]]> 2022-10-21 06:01:14 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350226629 lisalisa08081998 https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350233126 2022-10-21 06:08:51 UTC https://padlet.com/21027529_2/e27j75cbkv0rhbfa/wish/2350233126