Question

CHECK 'N' PROCEED
Fill in the blanks:
1. The atom's mass and its entire positive charge is confined in a small core called
2. The protons are always
charged.
3. It was discovered by the scientist, Lord Rutherford during an experiment that the
mass of proton was equal to the mass of
4. Neutron was discovered by
5. Most of the space in an atom is

Answer 1

Answer:

option 2

Explanation:

We already learned that J. J. Thomson discovered a negatively charged particle, called the electron. Rutherford proposed that these electrons orbit a positive nucleus. In subsequent experiments, he found that there is a smaller positively charged particle in the nucleus, called a proton. There is also a third subatomic particle, known as a neutron.