Question

1. if a neutral atom has three electrons, how many protons does it have? k/u
2. in what ways is bohrs model of the atom similar to and different from thomsons model? k/u

Explanation:

Question 3

Step1: Recall the charge neutrality principle

In a neutral atom, the number of electrons equals the number of protons.
Let \(n_e\) be the number of electrons and \(n_p\) be the number of protons. For a neutral atom, \(n_e=n_p\).

Step2: Substitute the given value of electrons

Given \(n_e = 3\). Since \(n_e=n_p\), then \(n_p=3\).

• Similarity: Both models consider the atom as having electrons.
• Difference in electron placement:
• Thomson's model: Electrons are embedded in a positively - charged “soup” (plum - pudding model).
• Bohr's model: Electrons move in specific, quantized circular orbits around a small, dense, positively - charged nucleus.

Answer:

3

Question 4