Question

part a
which statement about electrons is true?

• some electrons have a charge of 1- and some have no charge
• electrons attract one another
• electrons are repelled by protons
• electrons are much lighter than neutrons

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subatomic particles with opposing charges attract.
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Explanation:

• Electrons all have a 1- charge, so the first option is false.
• Like charges repel, so electrons repel each other, not attract, making the second option false.
• Opposite charges attract, so electrons (negative) are attracted to protons (positive), not repelled, making the third option false.
• Electrons have a mass of ~$9.11\times10^{-31}$ kg, while neutrons have a mass of ~$1.67\times10^{-27}$ kg, so electrons are much lighter than neutrons.

Answer:

Electrons are much lighter than neutrons.