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thermal stability of hydrides of group 2

Jan 02,2021 - The correct order of thermal stability of the hydrides of group 16 elements isa)H2Po> H2Fe> H2Se> H2S > H2Ob)H2OH2Se>H2Te>H2Poc)H2O=H2S=H2Se-H2Te=H2Pod)H2O>H2S>H2SE>H2Te>H2PoCorrect answer is option 'D'. The stability of the hydrides of group 15 elements decreases in the order: Answer: The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O > H2S > H2Se > H2Te > H2Po. (ii) Thermal stability: Thermal stability of the hydrides of group 15 elements decreases as we go down the group. The reactions are shown to be nonradical and to probably proceed through a … The radius of an atom is governed by. This results in the charge density of their corresponding cations decreasing down the group. BeO and Be(OH)2 are amphoteric and react with acids and strong bases such as NaOH. Trends in Atomic Radius. Therefore, NH 3 is most stable and BiH 3 is least stable. This is because the central atom E increases in size down the group. This page discusses the solubility of the hydroxides, sulfates and carbonates of the Group 2 elements—beryllium, magnesium, calcium, strontium and barium—in water. ... Down the group, atoms of the alkali metals increase in both atomic and ionic radii, due to the addition of electron shells. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.It is usually measured on the Pauling scale, on which the most electronegative element (fluorine) is given an electronegativity of 4.0. | EduRev Class 12 Question is disucussed on EduRev Study Group by 104 Class 12 Students. Why is it that thermal stability of alkali metal hydrides decreases down the group, but for carbonates, it increases? You can see that the atomic radius increases as you go down the Group. The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O > H2S > H2Se > H­2Te > H2Po. This is because M-H bond dissociation energy decreases down the group with the increase in the size of a central atom. With the increase in the size of the central atom, the E – H bond becomes weaker. The thermal stability of the hydrides of group 15 follows the order (A) NH3 < PH3 < AsH3 < SbH3 < BiH3 ... (D) AsH3 < PH3 > SbH3 > BiH3 > NH3 Novel hydride results of increased thermodynamic and thermal stability (red point), while its free Gibbs energy benefits from both the enthalpy and entropy of complexation (as indicated Group II metal oxide basicity and hydroxide solubility in water increase as you go down the column. The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H 2 O > H 2 S > H 2 Se > H­ 2 Te > H 2 Po. The stability of hydrides decreases from ammonia to bismuthine. Memorandum presenting a mechanism for the thermal decomposition of sodium, lithium, beryllium, magnesium, aluminum, and boron alkyls and for the reverse reaction, the addition of olefins to metal hydrides. This is because M-H bond dissociation energy decreases down the group with the increase in the size of central atom. Can you explain this answer? Explain the thermal stability order hydrides of group 15 element 2 See answers KrupaMohan14 KrupaMohan14 Answer: One way to determine the thermal stability of a substance is to use a TGA (thermogravimetric analyzer). This is because M-H bond dissociation energy decreases down the group with the increase in the size of central atom. As a result, the electron donor capacity or the basic strength decreases down the group. Group with the increase in the order electron donor capacity or the basic strength decreases down the group increase the... 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