Bard seems to be better than ChatGPT in my recent testing for general knowledge, even citing sources at times. Neither seem to 'know' any basic nuclear physics, however. Impressed that Bard apologised for getting it wrong, though: "You're right, I made a mistake earlier. A neutron has a slightly higher mass than a proton. The mass of a neutron is 1.00866491 u, while the mass of a proton is 1.007276466 u. This means that the neutron has about 0.14% more mass than the proton.
I apologize for the confusion. I am still under development, and I am always learning. Thank you for pointing out my mistake. I will try my best to avoid making the same mistake in the future.
I hope this helps! Let me know if you have any other questions."