Found In Flashcards
main commercial source of He
Natural gas
He + Ne
radioactive origin
Pitch blende
Cleveite
Monazite
Ar
Major component in atmp
[Noble gas EXCEPT Rn&Og =1% vol of atmp]
Kr
KrF2 only possible
Xe
Rare
Rn
Rare
Rnf2
²²⁶Ra⁸⁸ -» ²²²Rn ⁸⁶ + ⁴He²
Og
atomic number
atomic mass
half life
²⁴⁹Cf⁹⁸ + ⁴⁸Ca²⁰»_space; ²⁹⁴Og¹¹⁸ + 3n
118
294
0,7ms
Known as noble gas
They react w very few elements
F
Present as insoluble fluorides
Cl
2.5% sea water
Ts
Synthetic
Radioactive
Greatest source of halogen
Sea
Most abundant element on Earth
O
O
% in crust
% in air
46.6
21
S
% in crust
In volcano
Sulphate
Sulphide
egg protein
garlic onion mustard hair wool
0.03-0.1
H2s
Baryte
Epsom salt
Gypsum
Plaster of paris
Copper pyrite
Galena
Zinc blende
CaSo4.2h20
Gypsum
Epsom salt
Mgso4.7h20
Baryte
Baso4
Galena
PbS
Zinc blende
ZnS
Copper pyrite
CuFeS2
Selenium
Selenides in s ore
Te
Tellurides in s ore
Po
Lv
atomic no
mass
half life
Decay of Th and Ur
Radioactive
h6alf life 13.8 days
syn radioactive
small amount and half life fraction of a second
Chalogens
Grp16
CaS04.1/2H20
Plaster of paris
N
% atmp
Earth’s crust
Other
Plants amd animal
78%
Nano3- Chile salt petre
Kno3 - indian salt petre
Proteins
P
Animals
Phosphoproteins
Occurs as minerals in
Bones+ living cell
Milk and egg
Apatite family Ca9[Po4]6.CaX2
Fluorapatite
X = F /cl / OH
As Sb Bi
Sulphide minerals
Most abundant metal
Al
abundant metal in Earth’s crust
1st
2nd
3rd
O
Si
Al
Mc
Atomic number
Mass number
Electronic configuration
Available in less amounts due to
115
289
[Rn] 5f14 6d10 7s2 7p3
Due to very short half life span
