Which of the following sets of quantum numbers correctly describes the electron that a chlorine atom gains to become chloride ion (Cl^-)?

n = 2, ℓ = 0, m_ℓ = 1, m_s = -1/2

n = 2, ℓ = 1, m_ℓ = 0, m_s = -1/2

n = 3, ℓ = 1, m_ℓ = 1, m_s = +1/2

n = 3, ℓ = 1, m_ℓ = 1, m_s = -1/2

n = 2, ℓ = 1, m_ℓ = -1, m_s = -1/2