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A lanthanum hexaboride hot cathode. Lanthanum hexaboride cathodes. Lanthanum hexaboride powdered. Lanthanum hexaboride (La B 6, also called lanthanum boride and LaB) is an inorganic chemical, a boride of lanthanum. It is a refractory ceramic material that has a melting point of 2210 °C, and is insoluble in water and hydrochloric acid. [1]
The CuTi 2 structure of the lanthanum, cerium and praseodymium diiodides along with HP-NdI 2 contain 4 4 nets of metal and iodine atoms with short metal-metal bonds (393-386 La-Pr). [10] these compounds should be considered to be two-dimensional metals (two-dimensional in the same way that graphite is). The salt-like dihalides include those of ...
The mean oxidation number for the boron atoms is then simply the ratio of hydrogen to boron in the molecule. For example, in diborane B 2 H 6, the boron oxidation state is +3, but in decaborane B 10 H 14, it is 7 / 5 or +1.4. In these compounds the oxidation state of boron is often not a whole number.
Lanthanum mercury – LaHg; Lanthanum silver – LaAg; Lanthanum thallium – LaTl; Lanthanum zinc – LaZn; Lanthanum boride – LaB 6; Lanthanum carbonate – La 2 (CO 3) 3; Lanthanum(III) chloride – LaCl 3; Lanthanum trifluoride – LaF 3; Lanthanum(III) oxide – La 2 O 3; Lanthanum(III) nitrate – La(NO 3) 3; Lanthanum(III) phosphate ...
CAS number LaAlO 3: lanthanum aluminate: 71496–78–1 LaB 6: lanthanum boride: 12008–21–8 LaBr 3: lanthanum bromide: 13536–79–3 La(CHO 2) 3: lanthanum formate: 2081–11–0 LaC 2: lanthanum carbide: 12071–15–7 LaCl 3: lanthanum chloride: 10099–58–8 LaCl 3 •3H 2 O: lanthanum chloride trihydrate: 35564–84–2 LaCl 3 •7H 2 ...
The CuTi 2 structure of the lanthanum, cerium and praseodymium diiodides along with HP-NdI 2 contain 4 4 nets of metal and iodine atoms with short metal-metal bonds (393-386 La-Pr). [ 49 ] these compounds should be considered to be two-dimensional metals (two-dimensional in the same way that graphite is).
LA Times. Danny Masterson, former 'That 70's Show' star, seeks to overturn rape convictions. Finance. Finance. Associated Press. US economy grows at 3.1% pace in 3rd quarter, an upgrade from ...
The number of molecules per mole in a substance is given by the Avogadro constant, exactly 6.022 140 76 × 10 23 mol −1 since the 2019 revision of the SI. Thus, to calculate the stoichiometry by mass, the number of molecules required for each reactant is expressed in moles and multiplied by the molar mass of each to give the mass of each ...