Loss of electrons is oxidation.
The donor is the one who loses the electron. Donor is the elctron carrier.
the lone pair on electron like nh3 make molecule good donor.
water
water
H2o
H2o
A proton donor is a molecule that donates it's protons to other molecules.
Since it is a metal it is an electron donor.
Potassium is electron donor
Not exactly. It is true that NAD is formed during electron transport chain, however, it's not a direct product. NADH is an electron carrier that dumps its electron to the electron transport chain, which oxidizes it into NAD. NAD then goes back to become reduced by glycolysis or citric acid cycle.
tin tends to lose electrons
No. Helium doesn't form compounds and is neither an electron donor nor an electron acceptor.