Of binary hydrogen compounds

Binary Compounds of Hydrogen. Binary compounds of hydrogen with the more electropositive elements are designated hydrides (NaH, sodium hydride). 

Sn f-Test 14.3 A What common binary compounds of hydrogen are powerful reducing agents ... 

The Preparation of a Hydride.—Strictly speaking, a hydride is the binary combination of hydrogen with a more positive element (metal) but for convenience we shall use the term to denote any binary compound of hydrogen. In addition to a number of methods applicable in special cases, there are two general methods available in the preparation of hydrides. The most general one is the direct union of hydrogen with another element, thus ... 

CH2=CH2 + H20 - CH3CH2OH. hydride A binary compound of a metal or metalloid with. hydrogen the term is often extended to include all binary compounds of hydrogen. A saline or saltlike hydride is a compound of hydrogen and a strongly electropositive metal a molecular hydride is a compound of hydrogen and a nonmetal a metallic hydride is a compound of certain d-block metals and hydrogen. 

Explain why there are more covalent than ionic binary compounds of hydrogen. 

Hydride. A binary compound of hydrogen with some other element. 

Formulas for binary compounds of hydrogen do not follow the rule just discussed. Hydrogen is written first in the formula if the compound is an add (Chapter 8) and written later if the compound is not an acid. For example, HCl is hydrochloric acid, and NH3 is ammonia. The position of the H in these formulas indicates that HCl is an acid and NH3 is not. H2O and H2O2 are exceptions to this rule neither is an acid. 

Binary compounds of hydrogen that are not acids are given special names. Two very important examples are water, H2O, and ammonia, NH3 (Figure 6.1). (Other much less important hydrogen-containing binary compounds are also known by common names. These include phosphine, PH3, and arsine, ASH3.) Hydrogen compounds that are acids in aqueous solution are named, and their formulas are written in special ways (see Section 6.3). 

In naming the binary compounds of hydrogen in which hydrogen is written first in the formula, name the compound as if hydrogen were an alkali metal (despite the fact that it is not, and that the compound is covalent). For example, HCl is named hydrogen chloride and H2S is named hydrogen sulfide. [These compounds do form ions to a greater or lesser extent when they are dissolved in water. (Section 8.4)]... 

Consider the following data for three binary compounds of hydrogen and nitrogen ... 

The formulas of tiie binary compounds of hydrogen may be correlated with the position of the combined element in the periodic table. For the elements in the first two rows of the periodic table these compounds are the following ... 

The ionic or molecular character of the binary compounds of hydrogen depends on the position of the other element in the periodic table (Figure 6-4). The reactions of H2 wdth the alkali (lA) and the heavier (more active) alkaline earth (IIA) metals result in solid ionic hydrides. The reaction wdth the molten (liquid) lA metals may be represented in general terms as... 

Hydrogen is a nonmetal. All binary compounds of hydrogen are covalent., except for certain metal hydrides such as NaH and CaH2y which contain hydride, H, ions. 

The periodic trends in the acid strengths of binary compounds of hydrogen and the nonmetals of periods 2 and 3 are summarized in FIGURE 16.17. 

The binary compounds of hydrogen are of three general types ionic hydrides (formed by active metab), melalic hydrides (formed... 

The water is a binary compound of hydrogen and oxygen, and the relative weights of the two elementary atoms are in ratio 1 7 ... 

Another option is using hydrides, binary compounds of hydrogen with one other substance. Above all metal hydrides offer themselves as storage medium. Their advantages are ... 

The binary compounds of hydrogen are of three general types ionic hydrides (formed by active metals), metaiiic hydrides (formed by transition metals), and moiecuiar hydrides (formed by nonmetals). The ionic hydrides contain the H ion because this ion is extremely basic, ionic hydrides react with H2O to form Hj and OH . 

Ammonia (NH3), hydrazine (N2H4), and hydrazoic acid (HN3) are the most important binary compounds of hydrogen and nitrogen. The first two are bases, but hydrazoic acid, as its name implies, is weakly acidic. 

Some binary compounds of hydrogen and nonmetals yield acidic solutions when dissolved in water. These solutions are named like compounds by using the prefix... 

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