https://padlet.com/nooranettan/nx98l1nsqyfz9ybk nettan en-us 2021-11-29 16:24:28 UTC 2025-11-26 13:45:39 UTC hello@padlet.com nooranettan https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918369746 1777-1838]]> 2021-11-29 16:30:14 UTC https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918369746 nooranettan https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918513001 asub 5. perioodis VIIA rühmas
aatominumber 53, aatommass 126.9 amü
53 elektroni, 53 prootonit ja 74 neutronit
viis elektronkihti, viimasel kihil seitse elektroni
mittemetall
halogeen
keemiliselt aktiivne
looduses ühenditena, leidub merevees
maakoores 60. kohal
bioelement]]> 2021-11-29 17:24:34 UTC https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918513001 nooranettan https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918715781 1811, Bernard Courtois
Napoleoni sõjad, püssirohi
naatriumkarbonaat
vetikad
tuhka uhuti veega, jäätmed hävitati väävelhappega
liiga palju hapet, lillakas aur
tumedad kristallid külmal pinnal
nimi Kreeka keelest (ioeidēs)
1813 tehti avalikuks]]> 2021-11-29 18:45:49 UTC https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918715781 nooranettan https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918717326 2021-11-29 18:46:32 UTC https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918717326 nooranettan https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918724505 2021-11-29 18:49:48 UTC https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918724505 nooranettan https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918728452 2021-11-29 18:51:27 UTC https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1918728452 nooranettan https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1920509930 2021-11-30 14:29:42 UTC https://padlet.com/nooranettan/nx98l1nsqyfz9ybk/wish/1920509930