Rutherford
Spanish conquistadors.
Scooter Braun
Xenon was discovered by William Ramsay and Morris Travers. Together, they also discovered neon and krypton.
King Tut was discovered in 1922.
Jupiter was known to ancient astronomers. One of its moons was observed in 362 BC.
Venus can be the third brightes object in the sky, after the sun and moon. It would have been known about for thousands of years.
you already partly answered your own question. Neutrons.
Judy neutron
No. A neutron carries no charge.
There is no such thing as a "positive neutron" or a "negative neutron". A neutron is always neutral.
James chadwick was the discoverer of neutron. He gave the famous neutron reaction.
A neutron does not have a charge -- its neutral