1. most sulfates are soluble except BaSO4, Hg2SO4,PbSO4 and CaSO4 sulfate. Get an answer for 'Describe the relationship between the solubility of the salts containing alkaline earth metal ions and the position of the metals in the periodic table.' Hydroxides of the lighter alkaline earth metals are insoluble in water, but their solubility increases as the atomic number of the metal increases. Solubility of sulphates: The solubility of sulphates of alkaline earth metals decreases as we move down the group from Be to Ba due to the reason that ionic size increases down the group. Those of the alkali metals and ammonium ion are soluble. Colours of metal sulfides are important in identifying compounds in inorganic chemistry. The lattice energy remains constant because sulphate ion is so large, so that small change in cationic sizes do not make any difference. Because BeO and MgO are much more inert than the other group 2 oxides, they are used as refractory materials in applications involving high temperatures and mechanical stress. SOLUBILITY RULES. Because BeO and MgO are much more inert than the other group 2 oxides, they are used as refractory materials in applications involving high temperatures and mechanical stress. All alkali metals sulfide and alkaline earth metals sulfides are soluble in water and form colourless aqueous solutions. Data on some, such as cesium and rubidium fluoride, nitrate, carbonate, and sulfate, appear to be reported for the first time. The periodic trend in the solubility of alkaline earth metal compounds is that as one goes down a group, it increases in activity. Hydroxides of the lighter alkaline earth metals are insoluble in water, but their solubility increases as the atomic number of the metal increases. Actually I have to tell you it ranges from “not very” to “almost completely insoluble”. Solubility of sulphates and carbonates of alkaline earth metals decreases as the atomic number of the metal increases down the group because the size of the cation increases down the group. Add 1 mL (about 25 drops or fill the well about 1⁄ 4 inch or 0.5 cm deep) of an alkaline earth metal chloride solution to each well in a horizontal row, as follows (see Figure 1): Each rule has exceptions and the important ones are noted. Solubility of sulfates generally decrease as you go down a group. Most of the precipitation reactions that we will deal with involve aqueous salt solutions. Solubilities of the halides, nitrates, carbonates, sulfates, and some perchlorates of all the alkali metals and alkaline earth metals in methanol at room temperature have been determined. ... insoluble and slightly soluble plus a good set of rules for solubility at the end of the file. The alkaline earth metals are soluble. 2. There are solubility rules to follow when prdicting the solubility of a salt.see below. The most important slightly soluble substance is calcium hydroxide, Ca ... All alkali metal and alkaline earth (Be 2+, Mg 2+, Ca 2+, Sr 2 For example, barium has more activity than strontium or calcium. Solubility Patterns in the Periodic Table continued 2 216 linn Scientiic nc ll ihts esered 4. Cr 2 S 3 and Al 2 S 3 decompose and precipitate as hydroxides. so your answer becomes BaSO4