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Statement-1: All tetrahedral complexes a...

Statement-1: All tetrahedral complexes are mainly high spin and the low spin configurations are rarely observed.
Statement-2: `Delta_(t)` is always much smaller even with stronger field ligands and it is never energetically favourable to pair up the electrons.

A

Statement-1 is True, Statement-2 is True , Statement-2 is a correct explanation for Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

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The correct Answer is:
A
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Explore conceptually related problems

Assertion : In tetrahedral complexes low spin configuration are rarely observed . Reason : Delta_(t) = ((4)/(9)) Delta_(0)

How many ions are produced from the complex, [CO (NH_3)_6] Cl_2 in solution? Low spin configuration are rarely observed in tetrahedral coordination entity formation. Explain.

Square planar complexes are formed by d^(8) ions with strong field ligands The crystal field splitting Delta_(0) is larger for the second and theird row transition elements and for more highly charged species All the complexes having 4d^(8) and 5d^(8) configurations are mostly square planar including those with weak field ligands such as halide ions square planar complexes can show geometrical isomerism but they do not show optical isomerism due to the presence of plane of symmetry (a) All are low spin complexes (b) [Ni(CO)_(4)] (c) [Pt(NH_(3))_(4)]^(2+) (d) [Ni(NH_(3))_(6)]^(2+) .

Assertion (A) : Low spin tetrahedral complexes are rarely observed. Reason (R) : Crystal field splitting is less than pairing energy for tetrahedral complexes.

Velence bond theroy describes the bonding in complexs in terms of coordinate -covalent bond resulting from overlap filled ligand orbitals with vacant metal hybrid orbitals This theory explains magnetic behaviour and geometrical shape of coordination compounds Magnetic moment of a complex compound can be determined experimentally and theoretically by using spin only formula Magnetic moment sqrtn (n+2)BM (where n = No. unpaired electrons) . The value of of spin only magnetic moment for octahedral complex of the following configuration is 2.84BM The correct statement is (a) d^(4) (in weak field ligand) (b) d^(2) (in weak field and in strong field ligand) (c) d^(3) (in weak field and in strong field ligand) (d) d^(5) (in strong field ligand) .

(a) Write the co-ordination number and oxidation state of platinum in the complex [Pt(en)_(2)Cl_(2)] (b) Low spin configuration are rarely observed in tetrahedral co-ordination entity formation . Explain .

STATEMENT-1: All the complexes of Pt (+squaresquare) and Au (+squaresquaresquare) with strong field as well as with weak field ligands are square planar. STATEMENT-2 : The crystal filed spliting energy is larger for secong and third row transition elements, and for more highly charged species. This large value of crystal field splitting enerfy energetically favours the pairing of electron for square planar geometry.

STATEMENT-1: Tetrahedral complexes are always high spin complexes . STATEMENT-2: Crystal field splitting energy in tetrahedral complexes is 2/3 of the Delta_(0) (crystal field splitting energy in octahedral complexes). STATEMENT-3: Tetrahedral complex [MABCD]^(pm n) is optically active .

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