Silicon Energy Ion Level 1 Level 2 (ev) 2590.0 SI XIV 1 6 2560.0 SI XIV 1 5 2500.0 SI XIV 1 4 2370.0 SI XIV 1 3 2290.0 SI XIII 1S2 1S 1S4P 1PO 2180.0 SI XIII 1S2 1S 1S3P 1PO 1990.0 SI XIV 1 2 1930.0 SI XI 1S22S2 1S(0) 1S2S22PX 1900.0 SI X 1S22S22P 2P(1/2)O 1S2S22P2X 1880.0 SI IX 1S22S22P2 3P(0) 1S2P22P3X 1860.0 SI XIII 1S2 1S 1S2P 1PO 1860.0 SI VIII 1S22S22P3 4S(3/2)O 1S2S22S4X 1850.0 SI XIII 1S2 1S 1S2P 3PO 1850.0 SI VII 1S22S22P4 3P(0) 1S2S22P5X 1850.0 SI XII 1S22S 2S(1/2) 1S2S2 1840.0 SI XIII 1S2 1S 1S2S 3S 1830.0 SI IV 1S22S22P63S 3S(1/2) 1S2S22P63S2X 1830.0 SI V 1S22S22P6 1S22S22P53S 1830.0 SI VI 1S22S22P5 2P(1/2)O 1S2S22P6X 1830.0 SI II 1S22S22P63S23P 2P(1/2)O 1S22S22P53S23P2X 1830.0 SI III 1S22S22P63S2 1S(0) 1S22S22P53S23PX 1830.0 SI XI 1S22S2 1S(0) 1S2S22P 592.0 SI XIV 2 6 561.0 SI XIV 2 5 500.0 SI XIV 2 4 444.0 SI XII 1S22S 2S(1/2) 1S25P 400.0 SI XII 1S22S 2S(1/2) 1S24P 376.0 SI XII 1S22P 2P(1/2) 1S24D 370.0 SI XIV 2 3 370.0 SI XI 1S22S2 1S(0) 1S22S4P 350.0 SI XI 1S22S2P 1PO 1S22S4L 332.0 SI XIII 1S2P 1PO 1S3D 1D 329.0 SI XIII 1S2P 3PO 1S3D 3D 315.0 SI X 1S22S22P 2P(1/2)O 1S24D 303.0 SI XII 1S22S 2S(1/2) 1S23P 295.0 SI IX 1S22S22P2 3P(0) 1S22S22P4L 283.0 SI XI 1S22S2 1S(0) 1S22S3P 1PO 281.0 SI XII 1S22P 2P(1/2) 1S23D 272.0 SI XII 1S22P 2P(1/2) 1S23S 268.0 SI XI 1S22S2P 1PO 1S22S3D 3D 260.0 SI VIII 1S22S22P3 4S(3/2)O 1S22S22P2NL 252.0 SI XI 1S22S2P 1PO 1S22S3D 1D 248.0 SI X 1S22S2P2 1S22S2P3D 245.0 SI X 1S22S22P 2P(1/2)O 1S23D 237.0 SI XI 1S22S2P 1PO 1S22S3S 1S 232.0 SI VII 1S22S22P4 3P(0) 1S22S22P3NL 229.0 SI IX 1S22S2P3 3DO 1S22S2P23D 226.0 SI X 1S22S22P 2P(1/2)O 1S23S 224.0 SI IX 1S22S22P2 3P(0) 1S22S22P3D 222.0 SI XIV 3 6 217.0 SI X 1S22S2P2 1S22S2P3S 210.0 SI VIII 1S22S22P3 4S(3/2)O 1S22S2P33P 203.0 SI VIII 1S22S22P3 4S(3/2)O 1S22S22P23D 4L 203.0 SI IX 1S22S2P3 3DO 1S22S2P23S 202.0 SI VII 1S22S22P4 3P(0) 1S22S22P34L 201.0 SI IX 1S22S22P2 3P(0) 1S22S22P3S 195.0 SI VIII 1S22S22P3 4S(3/2)O 1S22S22P23D 2L 194.0 SI VII 1S22S22P4 3P(0) 1S22S2P43P 190.0 SI XIV 3 5 180.0 SI VII 1S22S2P5 1S22S2P43D 178.0 SI VII 1S22S22P4 3P(0) 1S22S22P33D 3PO 178.0 SI VIII 1S22S22P3 4S(3/2)O 1S22S22P23S 2L 178.0 SI VIII 1S22S2P4 1S22S2P33D 171.0 SI VIII 1S22S22P3 4S(3/2)O 1S22S22P23S 4L 170.0 SI III 1S22S22P63S2 1S(0) 1S22S22P63S3PX 169.0 SI VII 1S22S22P4 3P(0) 1S22S22P33D 3DO 163.0 SI VIII 1S22S2P4 1S22S2P33S 156.0 SI VII 1S22S22P4 3P(0) 1S22S22P33S 3DO,3PO 153.0 SI V 1S22S22P6 1S22S2P63P 149.0 SI VI 1S22S22P5 2P(1/2)O 1S22S22P43D 2S,2P 149.0 SI VI 1S22S22P5 2P(1/2)O 1S22S22P43D 2F,2D 148.0 SI VI 1S22S22P5 2P(1/2)O 1S22S22P43D 4L 145.0 SI VII 1S22S22P4 3P(0) 1S22S22P33S 3SO 145.0 SI V 1S22S22P6 1S22S22P54D 137.0 SI V 1S22S22P6 1S22S22P54S 130.0 SI XIV 3 4 129.0 SI V 1S22S22P6 1S22S22P53D 1DO,1FO 128.0 SI V 1S22S22P6 1S22S22P53D 1PO 126.0 SI V 1S22S22P6 1S22S22P53D 3PO 125.0 SI VI 1S22S22P5 2P(1/2)O 1S22S22P33S 111.0 SI IV 1S22S22P63S 3S(1/2) 1S22S22P53S2X 105.0 SI V 1S22S22P6 1S22S22P53S 1PO 104.0 SI V 1S22S22P6 1S22S22P53S 3PO 92.09 SI XIV 4 6