Yes, neutron gas is expected to behave much better ideal gas than hydrogen gas.

Explanation

A gas can be called an ideal gas if it follows certain properties.

1) The volume of particles of ideal gas should negligible.

2) There should be no interaction between particles of ideal gas.

Now according to above properties, a neutron gas is expected to behave more like an ideal gas than hydrogen gas because of following reasons:

(i) Neutron is a neutral particle (no charge). So, there will be no interaction between neutron particles. Whereas hydrogen have electron and proton due to which there is possibility of interaction among hydrogen molecules.

(ii) Secondly neutrons are very small in size as compared to hydrogen molecule. So, neutron gas also fulfills the second condition of ideal gas more precisely than hydrogen gas.