Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
What are the Characteristics of Alkali Metals? Also show some important ores of alkali metal. What are the Characteristics of Alkali Metals? Also show some important ores of alkali metal.
What are the Characteristics of Alkali Metals? Also show some important ores of alkali metal.
Characteristics of Alkali Metals: 1. Each member of group IA or group 1 has ns1 arrangement of electrons where n represents for the outermost shell i.e., all these members possess only on electron in their outermost shell followed with (n – 1)s2p6 or (n – 1)s2 (i.e., Li). Lithium or 3Li : 1S2, 2s1 or [He] 2s1 Sodium or 11Na : 1s2, 2s22p6, 3s1 or [Ne] 3s1 Potassium or 19K : 1s2, 2s22p6, 3s22p6, 4s1 or [Ar] 4s1 Rubidium or 37Rb : 1s2, 2s22p6, 3s23p6d10, 4s24p6d10, 5s25p6, 6s1 or [Xe] 6s1 Caesium or 55Cs : 1s2, 2s22p6, 3s23p63d10, 4s24p6d10, 5s25p6, 6s1 or [Xe] 6s1 Francium or 87Fr : 1s2, 2s22p6, 3s23p63d10, 4s24p64f14, 5s25p65d10, 6s26p6, 7s1 or [Rn] 7s1 2. Because of similarity in electronic configuration, they exhibit similar properties. A regular gradation in their properties with increase in at. no. is observed due to increasing size of atoms/ions and the low binding energy of valency electrons. 3. Of all the alkali metals, only sodium and potassium are found in abundance in nature. Francium occurs only in minute quantities as a radioactive decay product. Physical Nature Some important ores of alkali metals are as follows: Lithium : Tiphylite, Petalite, Lepidolite, Spodumene, [LiAl(SiO3)3], Amblygonite [Li(AIF)PO4] Sodium : Chile salt petre (NaNO3), Rock slt or Sodium chloride (NaCI), Sodium sulphate (Na2SO4), Borax (Na2B4O7.10H2O), Glauber salt (Na2SO4.10H2O), Natron (Na2CO3.HO), Soda Felspar (NaAISi3O8), Cryolite (Na3AI6) and Trona (Na2CO3.2NaHCO3.3H2O). Potassium : Sylvine (KCI), carnallite (KCI.MgCI2.6H2O), Felspur (K2O.AI2O3.6SiO2), Polyhalite (K2SO4.MgSO4.CaSO4.6H2O), Indian salt peter (KNO3) and Kainite (KCI.MgSO4.MgCI2.3H2O). Rubidium : Lepidolite, triphylite Lithium ores contains 0.7 to 3% Rb2O. Caesium : Lepidolite, Pollucite contains 0.2 to 7% Cs2O
Characteristics of Alkali Metals: 1. Each member of group IA or group 1 has ns1 arrangement of electrons where n represents for the outermost shell i.e., all these members possess only on electron in their outermost shell followed with (n – 1)s2p6 or (n – 1)s2 (i.e., Li). Lithium or 3Li : 1S2, 2s1 or [He] 2s1
Sodium or 11Na : 1s2, 2s22p6, 3s1 or [Ne] 3s1
Potassium or 19K : 1s2, 2s22p6, 3s22p6, 4s1 or [Ar] 4s1
Rubidium or 37Rb : 1s2, 2s22p6, 3s23p6d10, 4s24p6d10, 5s25p6, 6s1 or [Xe] 6s1 Caesium or 55Cs : 1s2, 2s22p6, 3s23p63d10, 4s24p6d10, 5s25p6, 6s1 or [Xe] 6s1 Francium or 87Fr : 1s2, 2s22p6, 3s23p63d10, 4s24p64f14, 5s25p65d10, 6s26p6, 7s1
or [Rn] 7s1 2. Because of similarity in electronic configuration, they exhibit similar properties. A regular gradation in their properties with increase in at. no. is observed due to increasing size of atoms/ions and the low binding energy of valency electrons. 3. Of all the alkali metals, only sodium and potassium are found in abundance in nature. Francium occurs only in minute quantities as a radioactive decay product. Physical Nature Some important ores of alkali metals are as follows: Lithium : Tiphylite, Petalite, Lepidolite, Spodumene, [LiAl(SiO3)3], Amblygonite [Li(AIF)PO4]
Sodium : Chile salt petre (NaNO3), Rock slt or Sodium chloride (NaCI), Sodium sulphate (Na2SO4), Borax (Na2B4O7.10H2O),
Glauber salt (Na2SO4.10H2O), Natron (Na2CO3.HO), Soda Felspar (NaAISi3O8), Cryolite (Na3AI6) and Trona
(Na2CO3.2NaHCO3.3H2O).
Potassium : Sylvine (KCI), carnallite (KCI.MgCI2.6H2O), Felspur (K2O.AI2O3.6SiO2), Polyhalite (K2SO4.MgSO4.CaSO4.6H2O), Indian salt
peter (KNO3) and Kainite (KCI.MgSO4.MgCI2.3H2O).
Rubidium : Lepidolite, triphylite Lithium ores contains 0.7 to 3% Rb2O.
Caesium : Lepidolite, Pollucite contains 0.2 to 7% Cs2O
characteristics: 1. they are metallic in nature and are electropositive in nature. 2.they form ionic compounds(Li is sometimes an exception) 3.they always exhibit +ve oxidation state. ores: 1.dolomite 2.carnallite 3.rock salt priyanka
characteristics:
1. they are metallic in nature and are electropositive in nature.
2.they form ionic compounds(Li is sometimes an exception)
3.they always exhibit +ve oxidation state.
ores:
1.dolomite
2.carnallite
3.rock salt
priyanka
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -