The high-temperature limit for the rotational partition function is valid for all molecules above their boiling point except hydrogen; this is because hydrogen has the smallest moment of inertia, hence the largest rotational constant. One might question this conclusion for methane (CH4); it also has a very small moment of inertia (only the hydrogens contribute since the carbon is at the center of mass) and a low boiling point- 111.7 K. The three moments of inertia of methane are equal: la = p = Ic = 5.313 x 10-40 g cm².

a. Calculate the rotational temperature of this molecule.

b. Calculate the rotational partition function of methane at its boiling point (the symmetry number is o = 12)

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.

explanation: