which is the electron configuration for zinc?\n1s²2s²2p⁶3s²3p⁶4s²3d⁸\n1s²2s²2p⁶3s²3p⁶4s¹3d¹⁰\n1s²2s²2p⁵3s²3p⁶…

Brief Explanations:

Zinc has an atomic number of 30. Electrons fill orbitals in the order 1s, 2s, 2p, 3s, 3p, 4s, 3d etc. The 4s orbital fills before the 3d orbital. For zinc, the electron - configuration is obtained by filling these orbitals with 30 electrons. The 1s orbital holds 2 electrons, 2s holds 2, 2p holds 6, 3s holds 2, 3p holds 6, 4s holds 2 and 3d holds 10.

Answer:

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}$ (last option)