BIG POINTS If all sigma bonds can rotate freely

(which I understand bc the electron density lies within the axis where pi bonds cannot/are very rare and difficult to rotate bc of the electron density lying below and above the axis)

Can sigma bonds in a cyclic structure still rotate freely?

example in the photo.

Can there be a rotation between the C-3 and C-4 even though they both lie in the cyclic structure?

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explanation:

jjfnc fdnxnxx

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: