Question

which of the following is the correct electron configuration for titanium (ti)?
1s²2s²2p⁶3s²3p⁶4s²3d²
1s²2s²2p⁶3s²3p⁶3d⁴
1s²2s²2p⁶3s²3p⁶4s²4p²

Explanation:

Titanium has an atomic number of 22. Electrons fill orbitals in the order 1s, 2s, 2p, 3s, 3p, 4s, 3d. The 4s orbital fills before the 3d orbital. For titanium with 22 electrons, the electron - configuration is \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{2}\).

Answer:

1s²2s²2p⁶3s²3p⁶4s²3d²