Monoxide, mo-nok′sīd, n. an oxide containing a single oxygen atom in combination with two univalent atoms or one bivalent atom.
The elements of the group are univalent in their compounds with hydrogen and the metals.
Copper, like iron, forms two series of compounds: in the cuprous compounds it is univalent; in the cupric it is divalent.
Diamond-shaped tetrad with spindle-fibers attached; a-a, probably halves of one univalent chromosome; b-b, halves of the other.
Since sodium is a univalent element we should expect it to form an oxide of the formula Na2O.
univalent hydrogen and divalent oxygen will then have the symbols H- and -O-.
A divalent element, on the other hand, will combine with two atoms of a univalent element.
Silver acts as a univalent element and calcium as a divalent element in the formation of their respective nitrates and chlorides.
In one series the metals are univalent and the salts have formulas like those of the sodium salts.
As will be shown later in the chapter, the group NH4 in this compound acts as a univalent radical and is known as ammonium.
univalent u·ni·va·lent (yōō'nĭ-vā'lənt)
Having valence 1.
Having only one valence.
Of or relating to a chromosome that is not paired or united with its homologous chromosome during synapsis.