Dinitrogen monoxide (n20; nitrous oxide) is a greenhouse gas that enters the atmosphere principally from natural fertilizer breakdown. some studies have shown that the isotope ratios of,5n to mn and of l80 to i60 in n20 depend on the source, which can thus be determined by measuring the relative abundance of molecular masses in a sample of n20. (a) what different molecular masses are possible for n20? (b)the percent abundance of mn is 99.6%, and that of 160 is 99.8%. which molecular mass of n20 is least common, and which is most common?

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

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