Question

Which of the following combinations correctly shows the charges on the particles?

Options

• \(+1.6 \times 10^{-19} \mathrm{C}\)	\(-1.6 \times 10^{-19} \mathrm{C}\)	\(+3.2 \times 10^{-19} \mathrm{C}\)
  Proton	Neutron	Alpha particle

• \(+1.6 \times 10^{-19} \mathrm{C}\)	\(-1.6 \times 10^{-19} \mathrm{C}\)	\(+3.2 \times 10^{-19} \mathrm{C}\)
  Alpha particle	Electron	Neutron

• \(+1.6 \times 10^{-19} \mathrm{C}\)	\(-1.6 \times 10^{-19} \mathrm{C}\)	\(+3.2 \times 10^{-19} \mathrm{C}\)
  Proton	Electron	Alpha particle

• \(+1.6 \times 10^{-19} \mathrm{C}\)	\(-1.6 \times 10^{-19} \mathrm{C}\)	\(+3.2 \times 10^{-19} \mathrm{C}\)
  Electron	Proton	Alpha particle

Answer 1

\(+1.6 \times 10^{-19} \mathrm{C}\)	\(-1.6 \times 10^{-19} \mathrm{C}\)	\(+3.2 \times 10^{-19} \mathrm{C}\)
Proton	Electron	Alpha particle

Explanation:

A proton has a positive charge, an electron has an equal negative charge, and a neutron has no charge. An alpha particle is a helium nucleus containing two protons, so its charge is $$+3.2 \times 10^{-19}\mathrm{C}$$.