Question

which of the following is a true statement about an electron?
a it has a positive charge.
b it exhibits some properties of waves.
c it is located inside the atoms nucleus.
d it has the most mass of all atomic particles.

Explanation:

• Option A: Electrons have a negative charge, not positive. Protons have a positive charge.
• Option B: According to wave - particle duality (a fundamental concept in quantum mechanics), electrons exhibit both particle - like and wave - like properties. For example, in electron diffraction experiments, electrons show interference patterns similar to waves.
• Option C: Electrons are located outside the atom's nucleus. Protons and neutrons are located inside the nucleus.
• Option D: Electrons have a very small mass compared to protons and neutrons. Protons and neutrons have much more mass.

Answer:

B. It exhibits some properties of waves.