Answer the following questions given below:
During a science exhibition, three students presented different ideas about the atom.
- Student A said, "Atoms cannot be divided into smaller particles."
- Student B said, "Atoms contain electrons embedded in a positively charged sphere."
- Student C said, "Atoms contain a tiny positively charged nucleus with electrons revolving around it."
The audience discussed how each model helped scientists understand atoms and why newer models replaced older ones.
1. Which scientist's idea is represented by Student 'C'?
2. Which observation from Rutherford's experiment contradicts Student B's model?
3. Arrange the following atomic models in the correct chronological order of their development.
i. Bohr's model proposed that electrons move in fixed orbits around the nucleus, each with a definite energy.
ii. Thomson's model depicted the atom as a 'plum pudding' with electrons embedded in a sphere of positive charge.
iii. Rutherford's model proposed that atoms have a dense central nucleus.
iv. Dalton's model described atoms as indivisible particles.
i. Bohr's model proposed that electrons move in fixed orbits around the nucleus, each with a definite energy.
ii. Thomson's model depicted the atom as a 'plum pudding' with electrons embedded in a sphere of positive charge.
iii. Rutherford's model proposed that atoms have a dense central nucleus.
iv. Dalton's model described atoms as indivisible particles.