Q7 · 2025 · Paper 1Simple familiar1 mark
QUESTION 7
What key feature differentiates the Bohr model of the atom from the Rutherford model?
(A)
a high-density nucleus
(B)
neutrons in the nucleus
(C)
electrons in specific orbitals
(D)
a low-density cloud of electrons around the nucleus
WORKED SOLUTION
1 markAnswer C
ANSWER
C
Worked solution
Bohr introduced discrete allowed electron energy levels/orbits, unlike Rutherford’s classical orbiting-electron model. Option C.
Selects option C.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.