Group IIB

Group IIB and know that this means the group of elements zine. cadmium and mercury, whilst Group IIA refers to the alkaline earth metals beryllium, magnesium, calcium, barium and strontium. [Pg.13]

These elements formed Group IIB of Mendeleef s original periodic table. As we have seen in Chapter 13, zinc does not show very marked transition-metaf characteristics. The other two elements in this group, cadmium and mercury, lie at the ends of the second and third transition series (Y-Cd, La-Hg) and, although they resemble zinc in some respects in showing a predominantly - - 2 oxidation state, they also show rather more transition-metal characteristics. Additionally, mercury has characteristics, some of which relate it quite closely to its immediate predecessors in the third transition series, platinum and gold, and some of which are decidedly peculiar to mercury. [Pg.432]

Group IIB ineludes Zn, Cd and Hg. Zine has some resemblanee to magnesium but the other metals in the group have little in eommon. At room temperature mereury is unaffeeted by air, water or non-oxidizing agents whereas zine is more reaetive, albeit tempered by a proteetive hydroxide film, a property utilized in galvanizing. [Pg.29]

B. J. Aylett, Group IIB, Chap. 30, pp. 187-328, in Comprehensive Inorganic Chemistry, Vol. 3, Pergamon Press, Oxford, 1973. [Pg.1208]

Formation of group-IIIB-group-IB and -IIB element bonds is limited almost exclusively to the element B and is observed predominantly in metalloboranes and metallocarboranes. The boron-IB and boron-group-IIB bonding interactions either are of the a type or can be described as multicenter bonds ... [Pg.47]

The synthesis of compounds containing boron-group IIB bonds also occurs by two pathways. The most convenient method is using anionic borane or carboranc species, as in the group-IB case, to react with Zn, Cd, or Hg halides. Moreover, reactions between organometallic compounds (Zn, Cd) with unchanged boranes arc also realized, so Zn and Cd decaboranes, e.g., MB H 2 n solvent (M = Zn, Cd), result from reactions of decaborane(14) with MRj . [Pg.50]

The lower borates, e.g., a-2,3-[(Ph3P)ClCd]B5Hjj and jU-2,3-[(Ph3P)ClCd]-B5H7Br, also form metalloboranes with group-IIB elements ... [Pg.51]

Metallacarboranes containing group-IIB elements are limited to mercury... [Pg.51]

This chapter describes the formation of bonds of the group-IA and group-IIA metals to the group-IA, group-IIA, group-IB and group-IIB metals, as well as to the transition and inner transition metals. [Pg.321]

The compounds formed between the group-IA and group-IIB elements are collected in Table 1. Some compounds have been inserted into the table that are not... [Pg.426]

Tabi.f. 1. Compounds Formed Between Group-IA and Group-IIB Elements... [Pg.426]

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