s&p elements Group 1A
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Transcript of s&p elements Group 1A
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7/31/2019 s&p elements Group 1A
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Usama El-Ayaan
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7/31/2019 s&p elements Group 1A
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()
Electronic configuration3
Lithium Li {He}2s1
11Sodium Na {Ne}3s1
19Potassium K {Ar}4s1
37Rubidium Rb {Kr}5s1
55Cesium Cs {Xe}6s1
87Francium Fr {Rn}7s1
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Usama El-Ayaan
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------.
M+
.
.
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HCl(aq)
Li
Na
KRb
Cs
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KLi Na
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Na+ Cl- (g) Na(g) + Cl(g)Na(g) Na* (g)
[Ne]3s1 [Ne]3p1
Na*(g) Na(g) + h (589nm, yellow)
Usama El-Ayaan
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Usama El-Ayaan
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7/31/2019 s&p elements Group 1A
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Li3N
.
Li Na K Rb Cs
Li3N + H2O 3LiOH + NH3
M(s) M+(aq) + e-
H2O(l) + e- OH-)aq( + H2(g)
base strength increase
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Usama El-Ayaan
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: Li2O + H2O
2LiOH : Na2O2+ 2H2O H2O2 + 2NaOH
: MO2 + 2H2O 2MOH + H2O2 + O2
.. ..2-
:O:O:
.. ..
. . -:O:.O:
.. ..
Li2ONa2O2
KO2, RbO2, CsO2
Usama El-Ayaan
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() 2M(s) + H2(g) 2MH(s) The reactivity increases down the group.
MH + H2O MOH + H2
LiHLiAlH4(
.)BCl3 + LiAlH4 B2H6PCl3 + LiAlH4 PH3
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.
.
H lattice H hydration Rb+ > K+ > Na+ > Li+
.
.
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1-2-3-
4Li + C Li4C
4-5-6--Li2CO3, LiF7-
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Diagonal Relationships
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:803 C505 C
: Na + KCl NaCl + K
:
:800 C
2 NaCl (l) 2 Na (l) + Cl2 (g)
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7/31/2019 s&p elements Group 1A
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.
pHHCO3
-.
HCO3-
+
H
+
H2CO3 HCO3- + OH- H2O + CO32-
backing sodaCO2
.2NaHCO3 (s) Na2CO3 (s) + CO2 (g) + H2O (g)
potash-manic depression
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Preparation of Sodium compounds
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The solvay Process for the manufacture of NaHCO3
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Usama El-Ayaan