322095
Between actinides and lanthanides, the complex formation tendency is more for
1 lanthanides because of high chemical reactivity
2 lanthanides due to greater stability.
3 actinides as they have variable oxidation states.
4 actinides due to high charge to size ratio.
Explanation:
Because of higher nuclear charge and small size i.e., high charge to size ratio, actinides form complexes more readily than lanthanides.
CHXII09:COORDINATION COMPOUNDS
322096
What is the effective atomic number of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) ?
1 30
2 27
3 28
4 36
Explanation:
\(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) EAN \(=\) [atomic number of metal atom - oxidation number of metal atom) \(+2 \times\) number of ligands \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{SO}_{4}\right]\) can be written as \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \mathrm{SO}_{4}^{2-}\) \(\begin{aligned}\text { EAN } & =[30-(+2)+(2 \times 4)] \\& =[28+8] \\& =36\end{aligned}\) Thus. EAN of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) is 36 .
CHXII09:COORDINATION COMPOUNDS
322097
The effective atomic number of \(\mathrm{Cr}\) (atomic no. 24) in \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}\) is
1 35
2 27
3 33
4 36
Explanation:
Effective atomic number, EAN \(=\) number of electrons in \(\mathrm{Cr}+2 \times\) number of ligands - charge \( = 24 + 2 \times 6 - 3 = 33\)
CHXII09:COORDINATION COMPOUNDS
322098
What is effective atomic number of \(\mathrm{Pt}\) in \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) ? (Given atomic number of \(\mathrm{Pt}=78)\)
322095
Between actinides and lanthanides, the complex formation tendency is more for
1 lanthanides because of high chemical reactivity
2 lanthanides due to greater stability.
3 actinides as they have variable oxidation states.
4 actinides due to high charge to size ratio.
Explanation:
Because of higher nuclear charge and small size i.e., high charge to size ratio, actinides form complexes more readily than lanthanides.
CHXII09:COORDINATION COMPOUNDS
322096
What is the effective atomic number of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) ?
1 30
2 27
3 28
4 36
Explanation:
\(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) EAN \(=\) [atomic number of metal atom - oxidation number of metal atom) \(+2 \times\) number of ligands \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{SO}_{4}\right]\) can be written as \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \mathrm{SO}_{4}^{2-}\) \(\begin{aligned}\text { EAN } & =[30-(+2)+(2 \times 4)] \\& =[28+8] \\& =36\end{aligned}\) Thus. EAN of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) is 36 .
CHXII09:COORDINATION COMPOUNDS
322097
The effective atomic number of \(\mathrm{Cr}\) (atomic no. 24) in \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}\) is
1 35
2 27
3 33
4 36
Explanation:
Effective atomic number, EAN \(=\) number of electrons in \(\mathrm{Cr}+2 \times\) number of ligands - charge \( = 24 + 2 \times 6 - 3 = 33\)
CHXII09:COORDINATION COMPOUNDS
322098
What is effective atomic number of \(\mathrm{Pt}\) in \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) ? (Given atomic number of \(\mathrm{Pt}=78)\)
322095
Between actinides and lanthanides, the complex formation tendency is more for
1 lanthanides because of high chemical reactivity
2 lanthanides due to greater stability.
3 actinides as they have variable oxidation states.
4 actinides due to high charge to size ratio.
Explanation:
Because of higher nuclear charge and small size i.e., high charge to size ratio, actinides form complexes more readily than lanthanides.
CHXII09:COORDINATION COMPOUNDS
322096
What is the effective atomic number of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) ?
1 30
2 27
3 28
4 36
Explanation:
\(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) EAN \(=\) [atomic number of metal atom - oxidation number of metal atom) \(+2 \times\) number of ligands \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{SO}_{4}\right]\) can be written as \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \mathrm{SO}_{4}^{2-}\) \(\begin{aligned}\text { EAN } & =[30-(+2)+(2 \times 4)] \\& =[28+8] \\& =36\end{aligned}\) Thus. EAN of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) is 36 .
CHXII09:COORDINATION COMPOUNDS
322097
The effective atomic number of \(\mathrm{Cr}\) (atomic no. 24) in \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}\) is
1 35
2 27
3 33
4 36
Explanation:
Effective atomic number, EAN \(=\) number of electrons in \(\mathrm{Cr}+2 \times\) number of ligands - charge \( = 24 + 2 \times 6 - 3 = 33\)
CHXII09:COORDINATION COMPOUNDS
322098
What is effective atomic number of \(\mathrm{Pt}\) in \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) ? (Given atomic number of \(\mathrm{Pt}=78)\)
322095
Between actinides and lanthanides, the complex formation tendency is more for
1 lanthanides because of high chemical reactivity
2 lanthanides due to greater stability.
3 actinides as they have variable oxidation states.
4 actinides due to high charge to size ratio.
Explanation:
Because of higher nuclear charge and small size i.e., high charge to size ratio, actinides form complexes more readily than lanthanides.
CHXII09:COORDINATION COMPOUNDS
322096
What is the effective atomic number of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) ?
1 30
2 27
3 28
4 36
Explanation:
\(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) EAN \(=\) [atomic number of metal atom - oxidation number of metal atom) \(+2 \times\) number of ligands \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{SO}_{4}\right]\) can be written as \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \mathrm{SO}_{4}^{2-}\) \(\begin{aligned}\text { EAN } & =[30-(+2)+(2 \times 4)] \\& =[28+8] \\& =36\end{aligned}\) Thus. EAN of \(\mathrm{Zn}\) in \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}\) is 36 .
CHXII09:COORDINATION COMPOUNDS
322097
The effective atomic number of \(\mathrm{Cr}\) (atomic no. 24) in \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}\) is
1 35
2 27
3 33
4 36
Explanation:
Effective atomic number, EAN \(=\) number of electrons in \(\mathrm{Cr}+2 \times\) number of ligands - charge \( = 24 + 2 \times 6 - 3 = 33\)
CHXII09:COORDINATION COMPOUNDS
322098
What is effective atomic number of \(\mathrm{Pt}\) in \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) ? (Given atomic number of \(\mathrm{Pt}=78)\)
