The discovery of neutron became very late because ____?

The discovery of neutron became very late because ____?

نیوٹران کی دریافت بہت دیر ہوگئی کیونکہ ____؟
Explanation

Neutron is a neutral particle, meaning it has no electric charge.

Because of this, it didn't respond to electric or magnetic fields, making its detection difficult and late compared to protons and electrons.