questions

i) Plum pudding model → B (first to contain electrons)
ii) Democritus/Indestructible Particle model → A (first concept of the atom)
iii) Bohr model → C (electrons exist in energy levels)
iv) Electron cloud model → E (based on probability of electron location)
v) Model with a positively charged center (Rutherford's model) → D (first to contain nucleus)