Both Ti and Cr^2+ have 22 electrons, but different electron configurations. (a)

Question

Both Ti and Cr^2+ have 22 electrons, but different electron configurations. (a) Write the electron configuration for each. Ti Cr^2+ (b) Explain in detail why they are different. In the body, mercury's toxic effects are known to result from its ability to disrupt and insert into S-S bonds in critical enzymes. Fish, particularly tuna, which contain high levels of methyl mercury are frequently found to also have high levels of selenium. Given the low rate of mercury poisoning even in populations where large quantities of fish are consumed, this has led some to speculate that selenium serves to protect against mercury poisoning. Explain the chemical basis for this theory.

Explanation / Answer

a)

ground satate electronic configuration of Ti

1s22s22p63s23p64s23d2 or [ Ar ] 4s23d2  

ground state electronic configuration of Cr2+

1s22s22p63s23p63d4    or [ Ar ] 3d4

b)

in Ti 4s orbital contain 2 electron and 3d orbital contain 2 electron but in Cr2+ 4s orbital is empty and 3d orbital contain 4 electron therefore thay are chemically deffrent.

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