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Elements of Group II

In this Chapter, references which allude to several members of the group appear once only under the element first mentioned. The elements of Groups II and I are so closely linked in the field of Molten Salts that, to avoid duplication, this section appears once only and can be found in Chapter 1. [Pg.64]

Beryllium reacts with both polycrystalline and single crystals of tungsten to produce the same products. At 700—1200 °C, the phases Be2W (a = 4.44, c = 7.30 A) and Be22W (a = 7.24, c = 4.21 A) are formed.1 [Pg.64]

The determination of the molecular structure by X-ray diffraction of the compounds of beryllium, magnesium, calcium, strontium, and barium has been reviewed.2 [Pg.64]

The solubility of beryllium oxide, BeO, in aqueous solutions of the alkali-metal hydroxides increases with increasing alkali concentration. With [Pg.64]

Sutton (Specialist Periodical Reports) The Chemical Society, London, 1973, Vol. 1, p. 797. [Pg.64]

Beryllium halides and pseudohalides have been reviewed. Non-empirical LCAO MO SCF calculations are reported for the ground, C2 states of the Group II dihalides BeF2, MgF2, and CaF2. The calculations demonstrate the importance of id orbitals in the bonding of the dihalides and hence in the [Pg.73]

Pontonnier and S. Aleonard, Bull. Soc./rang. Mineral. Crist., 1972, 95, 507. [Pg.74]

Two of the key compounds in the evaluation and construction of a consistent set of thermodynamic values for beryllium compounds are BeO and BeF2. The available measurements on the enthalpies of formation of these two compounds have been collected and the selected values are for [Pg.75]

Dmitriev, V. P. Khan, and Yu. M. Kotel nikov, Isvest. Vyssh. Ucheb. Zaved., [Pg.75]

The chemistry of these elements will not be considered individually, as in previous Reports, but will be reviewed in sections covering particular aspects of the chemistry of the Group as a whole. For those topics which are common to Group I and II elements (c.g. cation solvation, molten salts, crown and cryptate complexes), the published data are reported in the relevant section in Chapter 1. [Pg.35]

The separation of isotopes of alkaline earth metals by ion-exchange chromatography (Be and Ca), using the band elution technique, and by chemical exchange reactions (Ca), using macrocyclic polyether complexes, has been assessed. The separation factors for Be and Ca decrease with increase in mass of the isotopes, and were found to be of the same order as those determined previously. Enrichment of the heavier isotopes of Ca by reaction (1), where L represents a macrocyclic polyether (c.g. DCH18C6, DB18C6), has also been shown to be effective.  [Pg.35]

Nishida, T. Nishida, and H. Ohtomo, Bull. Chem. Soc. Japan, 1976, 49, 571. [Pg.35]


Table 9.2 Electronic structure of the first three elements of Group II. Table 9.2 Electronic structure of the first three elements of Group II.
Make a similar table of the elements of Group II, Family A, including magnesium. [Pg.206]

The largest difference in properties is between elements of group 0 and I and the smallest difference is between elements of groups II and III. The double-double effect that is reflected in four subgroups is similar to the observations of Moeller [13] who grouped La3+-Nd3+, Pm3+-Tb3+, Dy3+-Lu3+ into three groups. [Pg.175]

OBGANOMETALLia DERIVATIVES OE ELEMENTS OF GROUP II. 23 Reactions of Zinc Diethyl—continued. [Pg.23]

Binary and Ternary Compounds with Elements of Groups II, III, and V. 2f-ray electron spectroscopy has been used to probe the electronic structures of tungsten borides, nitrides and also some carbides and oxides. Enthalpies of formation AH°298.i5 the tungsten borides WB and W2B have been determined by fluorine calorimetry and are — 66.5 and — 68.2 kJ mol respectively. The theoretical possibilities of preparing M02B, a-MoB, MO2B5, WjB, a-WB, and W2B5 by chemical vapour deposition is discussed and MoXj (X = B or Be) have been prepared and examined by X-ray methods. ... [Pg.144]


See other pages where Elements of Group II is mentioned: [Pg.51]    [Pg.58]    [Pg.130]    [Pg.130]    [Pg.114]    [Pg.535]    [Pg.44]    [Pg.47]    [Pg.49]    [Pg.53]    [Pg.274]    [Pg.524]    [Pg.126]    [Pg.11]    [Pg.15]    [Pg.17]    [Pg.25]    [Pg.64]    [Pg.65]    [Pg.67]    [Pg.69]    [Pg.71]    [Pg.73]    [Pg.75]    [Pg.77]    [Pg.79]    [Pg.81]    [Pg.83]    [Pg.85]    [Pg.87]    [Pg.89]    [Pg.91]    [Pg.93]    [Pg.36]    [Pg.37]    [Pg.41]    [Pg.43]    [Pg.45]    [Pg.47]    [Pg.49]    [Pg.51]    [Pg.53]   


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Group II

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