Q15
Which of the following is the heaviest?
A.
Neutron
B.
Proton
C.
Atom
AnswerD.
Electron
Answer: Option C
Solution
Answer: Option C
Solution:
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms.
Atoms are extremely small; typical sizes are around 100 picometers.