† Lithium compounds tend to be more covalent than comparable alkali metal compounds. group. Thermal stability. Electronic configuration : ns1 ... Their solubility increases down the group since their lattice energy decreases more rapidly than their ... iii) Hydroxides, carbonates and nitrates of both Li and Mg decomposes on heating to yield respective oxide 2LiOH Li 2 O + H 2 O The carbonates of alkaline earth metals also decompose on heating to form oxide and carbon dioxide. Nitrate is a polyatomic ion with the chemical formula NO − 3. 3 (s) 2KNO 2 (s) + O 2 (g)Like with the carbonates of group 1, lithium nitrate is the exception behaving as most other nitrates. !Lithium is the smallest of the alkali metals and has the highest charge density. The carbonates get more soluble as you go down Group 1, but tend to get less soluble down Group 2. The carbonates of alkali metals are stable towards heat. But two metals as reactive as K and Ba won't combine by ionization. Thermal stability. D is very nasty. Most sulfates are soluble exceptions include SrSO 4, BaSO 4, PdSO 4 and CaSO 4 is slightly soluble. Solubility. However, carbonate of lithium, when heated, decomposes to form lithium oxide. (C is Not the answer). The solubilities of these salts further increase on descending the group. 2)E.g. SO4-2 All sulfates are soluble except: Ag2SO4, PbSO4, Hg2SO4, CaSO4, SrSO4, and BaSO4. Cl-1 All chlorides are soluble except: AgCl, PbCl2, and Hg2Cl2. All nitrates are soluble. Solubility. Water solubilities of group 2 nitrates at 0C in g/100gH2O are: Be(NO3)2 "very soluble," Mg(NO3)2 223, Ca(NO3)2 266, Sr(NO3)2 40, Ba(NO3)2 5. OH-1 The hydroxides of Group 1 metals, and the heavier Group 2 (ii) Carbonates Thermal stability The carbonates of alkali metals are stable towards heat. (ii) Carbonates. The majority of compounds formed by group II elements are ionic.The balance between the attraction of oppositely charged ions to one another and the attraction of separate ions to water dictates the solubility of ionic compounds. Solubility Rules and Common Ions Solubility Rules NO3-1 All nitrates are soluble. That lets out A Rule 1 says the nitrates are all soluble. All other carbonates are insoluble. The reason for low solubilities of strontium and barium nitrates seems to be similarity in size of Ba2+, Sr2+, and NO3- ions. All carbonates are insoluble except those of the Group 1 elements and NH Explaining the trends in Group 2 was difficult enough. !Thermal decomposition of ionic nitrates gives nitrites, but more covalent lithium nitrate decomposes to the oxide, similar to lead(II) nitrate. The carbonates of alkali metals are stable towards heat. 4. (ii) Carbonates. White crystalline solids with general formula MNO. The carbonates of alkaline earth metals also decompose on heating to form oxide and carbon dioxide. Salts containing this ion are called nitrates.Nitrates are common components of fertilizers and explosives. Nitrates of both group 1 and group 2 metals are soluble in water. solubility : Nitrates of group -1 and group-2 metals are all soluble in water. All column 1 and Ammonium ion are soluble. Group 1 nitrates. You don't have any way to eliminate it. All chlorides are soluble except AgCl, Hg 2 Cl 2 and PdCl 2. Thermal stabilities of nitrates of group-1 and group-2 metals increase on moving down the group from top to bottom. Harder to decompose on heating than most other metal nitrates. CO3-2 The carbonate of Group 1 metals and (NH4)2CO3 are soluble. 3.Very soluble in water. 1 GROUP -1 ( ALKALI METALS) 1. The carbonates of alkaline earth metals also decompose on heating to form oxide and carbon dioxide. They only decompose as far as the nitrite (MNO. Nitrates of both group 1 and group 2 metals are soluble in water. SOLUBILITY RULES 1. Solubility Nitrates of both group 1 and group 2 metals are soluble in water. That eliminates B All column 1 compounds are soluble. Comparing them with Group 1 is going to be even more difficult - particularly in the case of the carbonates, because the trends in the two Groups are in opposite directions. 2KNO. 2. However, carbonate of lithium, when heated, decomposes to form lithium oxide. That does C in. However, carbonate of lithium, when heated, decomposes to form lithium oxide. Almost all inorganic nitrates are soluble in water.An example of an insoluble nitrate is Bismuth oxynitrate.Removal of one electron yields the nitrate radical, also called nitrogen trioxide NO 3. In group 2 metals are soluble further increase on descending the group size of Ba2+, Sr2+, and heavier... Components of fertilizers and explosives except AgCl, Hg 2 Cl 2 and PdCl 2 B column. 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