# Which metals is alloyed with sodium to transfer heat in a nuclear reactor

Which one of the following metals is alloyed with sodium to transfer heat in a nuclear reactor?

1. Potassium
2. Calcium
3. Magnesium
4. Strontium

Potassium is alloyed with sodium in order to transfer heat in nuclear reactor.

Their combination is denoted as NaK.

The correct option is A.