But not only is the combining power or valency (atomicity) of the elements different, it is also observed that one element may combine with another in several proportions, or that its valency may vary; for example, phosphorus forms two chlorides represented by the formulae PC1 3 and PC1 51 nitrogen
atomicity הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד