Question

which of the following viewed the atom as having a nucleus made up of protons and neutrons, with electrons orbiting the nucleus in fixed, stable orbits, much like the planets orbit the sun? a) daltons atomic theory b) bohrs model c) electron cloud model d) schrodingers equation

Explanation:

• Option A: Dalton's atomic theory proposed atoms as indivisible, hard spheres, not with a nucleus and orbiting electrons.
• Option B: Bohr's model depicts the atom with a nucleus (protons, neutrons) and electrons in fixed, stable orbits like planets around the sun.
• Option C: The electron cloud model describes electrons in probabilistic clouds, not fixed orbits.
• Option D: Schrödinger's equation is for quantum mechanics, related to electron wave functions, not the orbital model described.

Answer:

B) Bohr's model