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With the C–O bond in carbon monoxide being 1.128 Å, what would be the bond length in Fe(CO)₅?
1. 1.15Å
2. 1.128Å
3. 1.13Å
4. 1.118Å
1. 1.15Å
2. 1.128Å
3. 1.13Å
4. 1.118Å
Subtopic: VBT, CFT & their Limitations |
From NCERT
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Consider the given two statements:
| Assertion(A): | \([Fe(H_2O)_5NO]SO_4\) is paramagnetic. |
| Reason(R): | The \(Fe\) in \([Fe(H_2O)_5NO]SO_4\) has three unpaired electrons. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: VBT, CFT & their Limitations |
From NCERT
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Consider the following statements:
The correct statement(s) is/are:
1. "a" and "b" only
2. "b" and "c" only
3. "c" only
4. "b" only
| (a) | Crystal field theory (CFT) considers the metal-ligand bond to be covalent, arising purely from overlapping between the metal ion and the ligand. |
| (b) | Octacarbonyldicobalt (0) has a Co-Co bond. |
| (c) | Ruby is an aluminium oxide (Al2O3) containing about 0.5–1% Zn2+ ions. |
The correct statement(s) is/are:
1. "a" and "b" only
2. "b" and "c" only
3. "c" only
4. "b" only
Subtopic: VBT, CFT & their Limitations |
From NCERT
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A pink-colored cobalt complex, denoted as (X), exists in aqueous solution. Upon reacting with concentrated HCl, it forms a deep blue-colored complex (Y). What are the identities of (X) and (Y), and what is the geometry of complex (Y), denoted as (Z)?
1. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
2. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral} \)
3. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral } \)
4. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
1. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
2. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral} \)
3. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral } \)
4. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
Subtopic: VBT, CFT & their Limitations |
From NCERT
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Consider the following statements
Correct statements are:
1. (a) and (b) only
2. (b) and (c) only
3. (a) and (c) only
4. (a), (b), and (c)
| (a) | Cr(CO)6 is an organometallic compound. |
| (b) | Wilkinson's catalyst is used for the hydrogenation of alkenes and it is a ruthenium complex. |
| (c) | In black and white photography, hypo solution is used to dissolve the undecomposed AgBr. |
1. (a) and (b) only
2. (b) and (c) only
3. (a) and (c) only
4. (a), (b), and (c)
Subtopic: Organometallic Complexes & their Uses |
From NCERT
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The correct pair of orbitals involved in \(\pi\)-bonding between metal and CO in metal carbonyl complexed is:
1. Metal dxy and carbonyl \(\pi_x^{*}\)
2. Metal dxy and carbonyl \(\pi_x\)
3. Metal dx2-y2 and carbonyl \(\pi_x^{*}\)
4. Metal dx2-y2 and carbonyl \(\pi_x\)
1. Metal dxy and carbonyl \(\pi_x^{*}\)
2. Metal dxy and carbonyl \(\pi_x\)
3. Metal dx2-y2 and carbonyl \(\pi_x^{*}\)
4. Metal dx2-y2 and carbonyl \(\pi_x\)
Subtopic: Organometallic Complexes & their Uses |
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From NCERT
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Which complex, among the following, has the highest value of crystal field splitting energy?
1. \([Co(CN)_6]^{3-}\)
2. \([Cu(NH_3)_4]^{2+}\)
3. \([Co(H_2O)_6]^{2+}\)
4. \([Ti(H_2O)_6]^{3+}\)
1. \([Co(CN)_6]^{3-}\)
2. \([Cu(NH_3)_4]^{2+}\)
3. \([Co(H_2O)_6]^{2+}\)
4. \([Ti(H_2O)_6]^{3+}\)
Subtopic: VBT, CFT & their Limitations |
From NCERT
JEE
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Given below are two statements:
| Assertion (A): | \(CO\) is referred as \(\pi\) acid ligands. |
| Reason (R): | In \(CO\), vacant \(π^{*} \)type orbitals are present. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Organometallic Complexes & their Uses |
From NCERT
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| Assertion (A): | Hydrazine is a neutral ligand. |
| Reason (R): | It has two N as donor atoms and behaves as a chelating ligand. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Ligands |
From NCERT
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