Least thermally stable
NettetCorrect options are A) , B) and D) (A) BeCO 3 has lowest thermal stability. It decomposes to give BeO and CO 2. Hence, it is placed in the atmosphere of CO 2 which prevents decomposition. Thus, the option A is correct. (B) B dissolves in alkali to form [Be(OH) 4] 2−. Be 2++4OH −→[Be(OH) 4] 2− Thus, the option B is correct. NettetSolution It is Due to the phenomena of 'Inert pair effect' . In p-block of periodic table , the elements at bottom like Sn,Pb have +4 state less stable than +2 state. because bond energy released after bond formation is less than required to unpair these electrons,i.e those 2 electrons.That is +2 more stable than +4 for pb and Sn.
Least thermally stable
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Nettet17. apr. 2024 · Which of the following is the least thermally stable? (a) MgCO3 (b) CaCO3 (c) SrCO3 (d) BeCO3. asked Oct 2, 2024 in Alkali and Alkaline Earth Metals by … NettetPreview this quiz on Quizizz. A thermally stable liquid, MCl4, reacts with water to form a solution of low pH value. Which statement about M or its oxides is true? GROUP 14 …
Nettet15. mai 1985 · The thermal stability of alkali and alkaline-earth metal hydroxide—nitrate systems has been investigated by thermal analysis, voltammetry and observation with a high-temperature microscope. The melts of alkali metal hydroxide—nitrate systems are thermally stable to at least 300°C above the melting temperatures. Nettet27. sep. 2024 · Among the following , the least thermally stable is A. `K_(2)CO_(3)` B. `Na_(2)CO_(3)` C. `BaCO_(3)`
NettetThus, the stability of the decomposition product metal oxide decreases, as close packing is not possible. Hence, the stability of the carbonate increases. Thus, among the given carbonates, the order of thermal stability is BaCO 3>CaCO 3>MgCO 3. Nettet15. mai 1985 · Abstract. The thermal stability of alkali and alkaline-earth metal hydroxide—nitrate systems has been investigated by thermal analysis, voltammetry …
Nettet2. okt. 2024 · Among the following the least thermally stable is (a) K2CO3 (b) Na2CO3 (c) BaCO3 (d) Li2CO3. asked Oct 2, 2024 in Alkali and Alkaline Earth Metals by …
Nettet11. jun. 2024 · This new zero thermal expansion (ZTE) material made of scandium, aluminum, tungsten and oxygen did not change in volume at temperatures ranging from 4 to 1,400 Kelvin (-269 to 1126 °C, -452 to ... fast track 1 week serviceNettet2. okt. 2024 · Among the following the least thermally stable is (a) K 2 CO 3 (b) Na 2 CO 3 (c) BaCO 3 (d) Li 2 CO 3. alkali and alkaline earth metals; class-11; Share It On Facebook Twitter Email. 1 Answer +1 vote . answered Oct 2, 2024 by Rajan01 (46.8k points) selected Oct 2, 2024 by Manish01 . Best ... french tip acrylic nails almondNettetCorrect option is C) BeCO 3 has lowest thermal stability. It decomposes to give BeO and CO 2. Hence, it is placed in the atmosphere of CO 2 which prevents decomposition. Be dissolves in alkali to form [Be(OH) 4] 2−. Be 2++4OH −→[Be(OH) 4] 2−. BeF 2 forms complexes with NaF in which Be goes with anion. BeF 2+2NaF→Na 2[BeF 4] 2−. french tip 1.5 sky blueNettetMost Upvoted Answer Among the following the least thermally stable is :a)K2CO3b)Na2CO3c)Ba... The smaller the size of the cation,more it's capability to polarise.so Li--O bonds strengthens.. and O---C bond weakens.resulting in the formation of Li2O and CO2. Hope this helps you. fast track 30 f ballNettet11. jun. 2024 · This new zero thermal expansion (ZTE) material made of scandium, aluminum, tungsten and oxygen did not change in volume at temperatures ranging from … fast track 241 toll roadNettet13. okt. 2024 · Among the following the least thermally stable is (a) K2CO3 (b) Na2CO3 (c) BaCO3 (d) Li2CO3. asked Oct 2, 2024 in Alkali and Alkaline Earth Metals by … fast track 30 latexNettet16. jan. 2024 · Therfore, a thermally stable oxide product comprising particulate iron oxide coated with an insoluble metal such as aluminum, barium, calcium, magnesium, iron or … fast track 2x2