Question

Which of the following does not exist?

• A. \([SiCl_6]^{2-}\)
• B. \([GeCl_6]^{2-}\)
• C. \([SiF_6]^{2-}\)
• D. \([Sn(OH)_6]^{2-}\)

Hint:

Stability of coordination complexes depends on central metal and ligands.

Answer 1

The Correct Option is B

Step 1: Stability of complexes
- \([SiCl_6]^{2-}\), \([SiF_6]^{2-}\), \([Sn(OH)_6]^{2-}\) are known stable complexes.
- \([GeCl_6]^{2-}\) does not exist due to instability of hexachlorogermanate.
Step 2: Conclusion
\([GeCl_6]^{2-}\) does not exist.