\(\mathrm{\mathrm{MnO}_{4}^{-2}}\) is green coloured due to \(\mathrm{\mathrm{L} \rightarrow \mathrm{M}}\) charge transfer. Oxidation state of \(\mathrm{\mathrm{Mn}^{+6}}\). \(\rm{M n^{+6}=[A r] 4 s^{0} 3 d^{1}\left(1 \text { unpaired } e^{-}\right)}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321238
\(\mathrm{CrO}_{3}\) dissolves in aqueous \(\mathrm{NaOH}\) to give
321239
Which oxide of first transition series is not amphoteric in nature?
1 \(\mathrm{V}_{2} \mathrm{O}_{5}\)
2 ZnO
3 \(\mathrm{Cr}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Sc}_{2} \mathrm{O}_{3}\)
Explanation:
Scandium oxide \(\left(\mathrm{Sc}_{2} \mathrm{O}_{3}\right)\) is a basic oxide.\(\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{ZnO}\) are amphoteric in nature.
CHXII08:THE D- & F-BLOCK ELEMENTS
321240
An element \(\mathrm{M}\) has the electronic configuration \({\rm{[Ar]3}}{{\rm{d}}^{\rm{5}}}\,{\rm{4}}{{\rm{s}}^{\rm{2}}}{\rm{.}}\) Which one of its oxide is unlikely to exist?
1 \(\mathrm{\mathrm{MO}_{2}}\)
2 \(\mathrm{\mathrm{M}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{MO}_{4}}\)
4 \({{\rm{M}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}\)
Explanation:
Given element 'M' is 'Mn' . The oxides given by Mn are \({\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{,}}\,\,{\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{,}}\,\,{\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{,}}\,\,{\rm{MnO}}\) but not \({\rm{Mn}}{{\rm{O}}_{\rm{4}}}{\rm{.}}\)
\(\mathrm{\mathrm{MnO}_{4}^{-2}}\) is green coloured due to \(\mathrm{\mathrm{L} \rightarrow \mathrm{M}}\) charge transfer. Oxidation state of \(\mathrm{\mathrm{Mn}^{+6}}\). \(\rm{M n^{+6}=[A r] 4 s^{0} 3 d^{1}\left(1 \text { unpaired } e^{-}\right)}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321238
\(\mathrm{CrO}_{3}\) dissolves in aqueous \(\mathrm{NaOH}\) to give
321239
Which oxide of first transition series is not amphoteric in nature?
1 \(\mathrm{V}_{2} \mathrm{O}_{5}\)
2 ZnO
3 \(\mathrm{Cr}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Sc}_{2} \mathrm{O}_{3}\)
Explanation:
Scandium oxide \(\left(\mathrm{Sc}_{2} \mathrm{O}_{3}\right)\) is a basic oxide.\(\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{ZnO}\) are amphoteric in nature.
CHXII08:THE D- & F-BLOCK ELEMENTS
321240
An element \(\mathrm{M}\) has the electronic configuration \({\rm{[Ar]3}}{{\rm{d}}^{\rm{5}}}\,{\rm{4}}{{\rm{s}}^{\rm{2}}}{\rm{.}}\) Which one of its oxide is unlikely to exist?
1 \(\mathrm{\mathrm{MO}_{2}}\)
2 \(\mathrm{\mathrm{M}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{MO}_{4}}\)
4 \({{\rm{M}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}\)
Explanation:
Given element 'M' is 'Mn' . The oxides given by Mn are \({\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{,}}\,\,{\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{,}}\,\,{\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{,}}\,\,{\rm{MnO}}\) but not \({\rm{Mn}}{{\rm{O}}_{\rm{4}}}{\rm{.}}\)
\(\mathrm{\mathrm{MnO}_{4}^{-2}}\) is green coloured due to \(\mathrm{\mathrm{L} \rightarrow \mathrm{M}}\) charge transfer. Oxidation state of \(\mathrm{\mathrm{Mn}^{+6}}\). \(\rm{M n^{+6}=[A r] 4 s^{0} 3 d^{1}\left(1 \text { unpaired } e^{-}\right)}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321238
\(\mathrm{CrO}_{3}\) dissolves in aqueous \(\mathrm{NaOH}\) to give
321239
Which oxide of first transition series is not amphoteric in nature?
1 \(\mathrm{V}_{2} \mathrm{O}_{5}\)
2 ZnO
3 \(\mathrm{Cr}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Sc}_{2} \mathrm{O}_{3}\)
Explanation:
Scandium oxide \(\left(\mathrm{Sc}_{2} \mathrm{O}_{3}\right)\) is a basic oxide.\(\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{ZnO}\) are amphoteric in nature.
CHXII08:THE D- & F-BLOCK ELEMENTS
321240
An element \(\mathrm{M}\) has the electronic configuration \({\rm{[Ar]3}}{{\rm{d}}^{\rm{5}}}\,{\rm{4}}{{\rm{s}}^{\rm{2}}}{\rm{.}}\) Which one of its oxide is unlikely to exist?
1 \(\mathrm{\mathrm{MO}_{2}}\)
2 \(\mathrm{\mathrm{M}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{MO}_{4}}\)
4 \({{\rm{M}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}\)
Explanation:
Given element 'M' is 'Mn' . The oxides given by Mn are \({\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{,}}\,\,{\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{,}}\,\,{\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{,}}\,\,{\rm{MnO}}\) but not \({\rm{Mn}}{{\rm{O}}_{\rm{4}}}{\rm{.}}\)
\(\mathrm{\mathrm{MnO}_{4}^{-2}}\) is green coloured due to \(\mathrm{\mathrm{L} \rightarrow \mathrm{M}}\) charge transfer. Oxidation state of \(\mathrm{\mathrm{Mn}^{+6}}\). \(\rm{M n^{+6}=[A r] 4 s^{0} 3 d^{1}\left(1 \text { unpaired } e^{-}\right)}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321238
\(\mathrm{CrO}_{3}\) dissolves in aqueous \(\mathrm{NaOH}\) to give
321239
Which oxide of first transition series is not amphoteric in nature?
1 \(\mathrm{V}_{2} \mathrm{O}_{5}\)
2 ZnO
3 \(\mathrm{Cr}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Sc}_{2} \mathrm{O}_{3}\)
Explanation:
Scandium oxide \(\left(\mathrm{Sc}_{2} \mathrm{O}_{3}\right)\) is a basic oxide.\(\mathrm{V}_{2} \mathrm{O}_{5}, \mathrm{Cr}_{2} \mathrm{O}_{3}, \mathrm{ZnO}\) are amphoteric in nature.
CHXII08:THE D- & F-BLOCK ELEMENTS
321240
An element \(\mathrm{M}\) has the electronic configuration \({\rm{[Ar]3}}{{\rm{d}}^{\rm{5}}}\,{\rm{4}}{{\rm{s}}^{\rm{2}}}{\rm{.}}\) Which one of its oxide is unlikely to exist?
1 \(\mathrm{\mathrm{MO}_{2}}\)
2 \(\mathrm{\mathrm{M}_{2} \mathrm{O}_{3}}\)
3 \(\mathrm{\mathrm{MO}_{4}}\)
4 \({{\rm{M}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}\)
Explanation:
Given element 'M' is 'Mn' . The oxides given by Mn are \({\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{,}}\,\,{\rm{Mn}}{{\rm{O}}_{\rm{2}}}{\rm{,}}\,\,{\rm{M}}{{\rm{n}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{,}}\,\,{\rm{MnO}}\) but not \({\rm{Mn}}{{\rm{O}}_{\rm{4}}}{\rm{.}}\)
