Kemija - 2015./16. ljeto - 6.

$[\mathrm{A}\mathrm{r}]3{\mathrm{d}}^{6}4{\mathrm{s}}^2[\backslash mathrm\{Ar\}]\; 3\; \backslash mathrm\{~d\}^\{6\}\; 4\; \backslash mathrm\{~s\}^\{2\}$

$[\mathrm{A}\mathrm{r}]3{\mathrm{d}}^5[\backslash mathrm\{Ar\}]\; 3\; \backslash mathrm\{~d\}^\{5\}$

$[\mathrm{A}\mathrm{r}]3{\mathrm{d}}^{5}4{\mathrm{s}}^2[\backslash mathrm\{Ar\}]\; 3\; \backslash mathrm\{~d\}^\{5\}\; 4\; \backslash mathrm\{~s\}^\{2\}$

$[\mathrm{A}\mathrm{r}]3{\mathrm{d}}^6[\backslash mathrm\{Ar\}]\; 3\; \backslash mathrm\{~d\}^\{6\}$