What do an electron and a neutron have in common? Each particle has a mass of 1 amu Each particle exists inside an atom Each particle has an electrical charge Each particle is located in the nucleus

## Step 1<br />The problem is asking us to identify the commonality between an electron and a neutron. We need to evaluate each of the given options and determine which one is true for both particles.<br /><br />## Step 2<br />The first option states that each particle has a mass of 1 amu. However, this is not true. The mass of an electron is approximately 0.0005 amu, which is significantly less than 1 amu. Therefore, this option is incorrect.<br /><br />## Step 3<br />The second option states that each particle exists inside an atom. This is true. Both electrons and neutrons are fundamental components of an atom. Electrons orbit the nucleus, while neutrons are located within the nucleus. Therefore, this option is correct.<br /><br />## Step 4<br />The third option states that each particle has an electrical charge. This is not true. Electrons carry a negative charge, while neutrons do not carry any charge. Therefore, this option is incorrect.<br /><br />## Step 5<br />The fourth option states that each particle is located in the nucleus. This is not true. While neutrons are located in the nucleus, electrons are not. They orbit the nucleus. Therefore, this option is incorrect.