Dr. K.Prabhakara Reddy, Shobana Ramkumar, Dr. Gayatri Ramachandran and, G. Devika Solutions for Chapter: Atomic Structure, Exercise 4: Evaluation

Write the findings of the Rutherford gold leaf experiment.

Can an atom exist with no electron in it? Explain.

What are the three sub-atomic particles present in an atom? Tabulate their mass and charge.

Valencies of $\mathrm{K}=1$ and $\mathrm{Cl}=1$. Write the formula of the following compound:
Potassium chloride.

Valencies of $\mathrm{Mg}=2$ and $\mathrm{Cl}=1$. Write the formula of the following compound:
Magnesium chloride.

Valencies of $\mathrm{O}=2$ and ferrous $=2$ . Write the formula of the following compound:

Ferrous oxide.

Valencies of $\mathrm{Ca}=2$ and $\mathrm{O}=2$. Write the formula of the following compound:
Calcium oxide.

Valencies of $\mathrm{K}=1$ and $\mathrm{O}=2$ . Write the formula of the following compound:

Potassium oxide.