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  • Identify the correct statement.Option: 1 and <img a

Identify the correct statement.

Option: 1

\mathrm{Be} and \mathrm{Al} show diagonal relationship


Option: 2

Be forms tetrahedral complexes \left[\mathrm{Be}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{2}\right]^{2-}


Option: 3

Al forms \mathrm{AlF}_{6}^{-3}, an octahedral complex


Option: 4

All of the above


Answers (1)

best_answer

\mathrm{Be} and \mathrm{Al} show diagonal relationship.

Due to similar charge/ radius ratios of beryllium and aluminium ions have strong tendency to form complexes.

For example, beryllium forms tetrahedral complexes such as \mathrm{BeF}_{4}{ }^{2-}and \left[\mathrm{Be}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{2}\right]^{2-}and aluminium forms octahedral complexes like \mathrm{AlF}_{6}{ }^{3-}and \left[\mathrm{Al}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}.

Maximum co-ordination number of \mathrm{Be} is 4 while that of \mathrm{Al} is 6.

Posted by

Suraj Bhandari

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