Chapter 29, Problem 1OQ

To determine

Which of the following holds a solid together

1. Gravitational forces.
2. Magnetic forces.
3. Electric forces.
4. Glue.
5. Nuclear forces.

Answer to Problem 1OQ

Solution:

c. Electric forces.

Explanation of Solution

We will discuss each of the options.

1. Gravitational force

   Since the mass of the atoms of the solid is very small, the effect of gravitational force is very weak to hold them together.

2. Magnetic force

   The magnetic field processed by most of the atoms are very small, hence magnetic force cannot hold the atoms of the solid together.

3. Electric force

   The electric force due to the exchange and sharing of the electron in an atom can hold the atoms in a solid together.

4. Glue

   Glue is not at all an option for holding the atoms together.

5. Nuclear force

   Nuclear force holds the particle inside nuclei together but does not act on the molecular level.

Conclusion:

c. Electric force

The electric force due to the exchange and sharing of electron holds the solid together.