What is an octet of electrons and which elements contain an octet of electrons?

Im pretty sure an octet of electrons is 8 valence electrons. Noble gases have these.

This is what i found on google “when one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and atp is converted to adenosine diphosphate (adp). likewise, energy is also released when a phosphate is removed from adp to form adenosine monophosphate (amp).” i hope this you .