Question
Chemistry Question on Hydrogen
Which among the following elements is used in nuclear reactors as moderator?
A
Ca
B
K
C
Mg
D
Be
Answer
Be
Explanation
Solution
Beryllium has excellent neutron moderating properties due to its low neutron absorption cross-section and high scattering efficiency. It is capable of slowing down the neutrons effectively without significantly absorbing them. Therefore, beryllium is a commonly used material in certain types of nuclear reactors as a moderator to control the speed of neutrons.
Therefore the element used in nuclear reactors as a moderator is option (D) beryllium (Be).