Kemija - 2017. ljeto, 6.

$1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{1}1\; \backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{p\}^\{6\}\; ~3\; \backslash mathrm\{s\}^\{1\}$

$1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{2}1\; ~\backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{p\}^\{6\}\; ~3\; \backslash mathrm\{s\}^\{2\}\; ~3\; \backslash mathrm\{p\}^\{2\}$

$1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{5}1\; \backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{p\}^\{6\}\; ~3\; \backslash mathrm\{s\}^\{2\}\; ~3\; \backslash mathrm\{p\}^\{5\}$

$1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}1\; \backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{s\}^\{2\}\; ~2\; \backslash mathrm\{p\}^\{6\}\; ~3\; \backslash mathrm\{s\}^\{2\}\; ~3\; \backslash mathrm\{p\}^\{6\}$