This resemblance is clearly expressed by stating that both orders of elements belong to those which are univalent with respect to hydrogen.
Such metals as mercury and copper, which are able to give not one but two bases, are of particular importance for distinguishing univalent and bivalent metals.
For univalent metals, like those of the alkalis, the weight of the equivalent is equal to the weight of the atom.
Among the bivalent metals the first place, with respect to their distribution in nature, is occupied by magnesium and calcium, just as sodium and potassium stand first amongst the univalent metals.
A univalent hydrocarbon radical of the ethylene series, CH2:CH; - - called also vinyl.
There is strong cumulative evidence that all such particles possess the same charge, which is identical with that associated with a univalentatom in electrolytic liquids.
In quantitative analysis, when conditions permit it, ammonium or sodium sulphate is frequently substituted for the ammonium salts of the univalent monobasic acids.
One is ring-shaped, the ring being formed by union of the free ends of the segment so that the spindle fibers are attached to the middle of each univalent chromosome (fig.
This pair divides in advance of the others, and the larger and smaller elements are plainly seen nearer the poles in anaphase than the other univalent chromosomes (figs.
All of the evidence at hand leads to the conclusion that in the Coleoptera, the univalent elements of all the pairs, equal and unequal, separate in the first spermatocyte mitosis and divide quantitatively in the second.
Expressed as here shown, both hydrogen atoms are assigned equal values, when in fact only one of the atoms is united to oxygen in form of hydroxyl, while the second is loosely attached to the univalent hydroxyl group.
These compounds, when dissolved in water, dissociate in such a way as to form simple, univalent metallic ions which are colorless.
A trivalent atom will combine with three atoms of a univalent element, as in the compound III III H{3}N.
Silver forms only one series of salts, being always a univalent metal.
Univalent hydrogen and divalent oxygen will then have the symbols H- and -O-.
Thus, in the general reaction between an acid and a base, the essential action is between the univalent hydrogen ion and the univalent hydroxyl ion.
Silver acts as a univalent element and calcium as a divalent element in the formation of their respective nitrates and chlorides.
Elements such as oxygen, calcium, and zinc, which can combine with two atoms of hydrogen or other univalent elements, are said to be divalent.
As will be shown later in the chapter, the group NH{4} in this compound acts as a univalent radical and is known as ammonium.
The elements of the group are univalent in their compounds with hydrogen and the metals.
In these two compounds the group of atoms, BiO, acts as a univalent metallic radical and is called bismuthyl.
An atom with an extra corpuscle is a univalent negative ion, an atom with one corpuscle detached is a univalent positive ion.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "univalent" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: unicameral; unicellular; unidirectional; unilateral; univocal
