Kemija - 2013./14. ljeto - 9.

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

$[\mathrm{H}\mathrm{e}]2{\mathrm{s}}^{2}2{\mathrm{p}}^3[\backslash mathrm\{He\}]\; 2\; \backslash mathrm\{s\}^\{2\}\; 2\; \backslash mathrm\{p\}^\{3\}$

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

$[\mathrm{A}\mathrm{r}]3{\mathrm{d}}^{7}4{\mathrm{s}}^2[\backslash mathrm\{Ar\}]\; 3\; \backslash mathrm\{d\}^\{7\}\; 4\; \backslash mathrm\{s\}^\{2\}$