The correct order for the wavelengths of absorption in the visible region for the following is:
\(\left[\mathrm{Ni}\left(\mathrm{NO}_2\right)_6\right]^{4-},\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+},\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\)
1. < <
2. > >
3.
4.
The number of unpaired electrons in the following complexes respectively are-
1. 1, 4, 5
2. 2, 4, 5
3. 0, 3, 4
4. 2, 3, 4
a. | Primary valencies are satisfied by negative ions while secondary valences are satisfied by negative ion only. |
b. | A metal ion has a definite number of secondary valences around the central atom. |
c. | Primary valences are usually ionizable, while secondary valences are non-ionizable |
The correct statements among the above are:
1. a, b
2. a, c
3. b, c
4. a, b, c
Match the following.
Ligand Name | Type of Ligand |
i. | a. Hexadenate |
ii. | b. Didentate |
iii. | c. Monodentate |
iv. EDTA | d. Ambidentate ligand |
1. i=d, ii=c, iii=b, iv=a
2. i=c, ii=d, iii=b, iv=a
3. i=c, ii=d, iii=a, iv=b
4. i=a, ii=c, iii=b, iv=d
The correct representation of tetrahydroxidozincate (II) is:
1. \([Zn(OH)_4]^{2-}\)
2. \([Zn(OH)_4]^{-}\)
3. \([Zn(OH)_4]^{3-}\)
4. \([Zn(OH)_4]\)
The correct representation of pentaamminenitrito-O-cobalt(III) is :
The correct representation of potassium tetracyanidonickelate(II) is :
The correct splitting diagram of d orbitals in an octahedral crystal field is:
1. | 2. | ||
3. | 4. | None of these. |
The ligand(s)that show a chelating effect is/are:
1. | Diethylenetriamine | 2. | Oxalato |
3. | Both 1 and 2 | 4. | None of these |