Antimony is an element in the fifth period (row) of the periodic table with five valence electrons. Electron configuration of antimony: ₅₁Sb 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p³. Five calence electrons of antimony are in 5s and 5p orbitals. Antimony is a chemical element with symbol Sb (from Latin: stibium) and atomic number 51.
