Question

The neutron was not discovered until 1932, more than thre

of the electron. Which of the following best explains why e
deduce the existence of the neutron?
ed until 1932, more than three decades aller
ng best explains why earlier scientists were unable to
A
The heavy mass of the nucleus meant that it was difficult to quantity
B
The neutron is a tiny, massless particle that is difficult to observe.
C
Atoms contain varying numbers of neutrons, therefore an average had to be
calculated.
D
The neutron has a neutral charge, which made it impossible to discover using
previous experiments with positive and negative charges.

Answer 1

Correct option is D) The neutron has a neutral charge, which made it impossible to discover using previous experiments with positive and negative charges.

Step-by-step explanation:

The protons are the positively charged particles of an atom. The electrons are the negatively charged particles of an atom. As both the particles carry some kind of charge i.e either positive or negative, hence their discovery was easier.

The neutrons are the part of an atom which are neutral and do not carry any charge. Hence, their discovery took a more longer time as compared to the discovery of electrons and protons.