321513
The magnetic moment of a transition metal compounds has been calculated to be 3.87 B.M. The metal ion is
1 \(\mathrm{Mn}^{2+}\)
2 \(\mathrm{Cr}^{2+}\)
3 \(\mathrm{V}^{2+}\)
4 \(\mathrm{Ti}^{2+}\)
Explanation:
\(\mathrm{V}^{2+}\) has outer electronic configuration as \(3{{\rm{d}}^3}4{{\rm{s}}^0}\) with \({\rm{n}} = 3\) \(\mu=\sqrt{\mathrm{n}(\mathrm{n}+2)}\) \(\mu=\sqrt{3(3+2)}\) \(=\sqrt{15}=3.87 \mathrm{BM}\)
JEE - 2023
CHXII08:THE D- & F-BLOCK ELEMENTS
321514
Which one of the following does not correctly represent the correct order of the property indicated against it?
1 \(\mathrm{\mathrm{Ti} < \mathrm{V} < \mathrm{Cr} < \mathrm{Mn}}\) : increasing number of oxidation states
2 \(\mathrm{\mathrm{Ti}^{3+} < V^{3+} < \mathrm{Cr}^{3+} < \mathrm{Mn}^{3+}}\) : increasing magnetic moment
The melting points of the transition element first rise to a maximum and then fall as the atomic number increases manganese have abnormally low melting point.
CHXII08:THE D- & F-BLOCK ELEMENTS
321515
The calculated spin only magnetic moment of \(\mathrm{\mathrm{Cr}^{2+}}\) ion is
321516
Assertion : \(\mathrm{Fe}^{2+}\) is paramagnetic. Reason : \(\mathrm{Fe}^{2+}\) contains four unpaired electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electronic configuration of \(\mathrm{Fe}:[\mathrm{Ar}] 3 \mathrm{~d}^{6} 4 \mathrm{~s}^{2}\) Electronic configuration of \(\mathrm{Fe}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{6}\) which has four unpaired electrons and is paramagnetic. So option (1) is correct.
321513
The magnetic moment of a transition metal compounds has been calculated to be 3.87 B.M. The metal ion is
1 \(\mathrm{Mn}^{2+}\)
2 \(\mathrm{Cr}^{2+}\)
3 \(\mathrm{V}^{2+}\)
4 \(\mathrm{Ti}^{2+}\)
Explanation:
\(\mathrm{V}^{2+}\) has outer electronic configuration as \(3{{\rm{d}}^3}4{{\rm{s}}^0}\) with \({\rm{n}} = 3\) \(\mu=\sqrt{\mathrm{n}(\mathrm{n}+2)}\) \(\mu=\sqrt{3(3+2)}\) \(=\sqrt{15}=3.87 \mathrm{BM}\)
JEE - 2023
CHXII08:THE D- & F-BLOCK ELEMENTS
321514
Which one of the following does not correctly represent the correct order of the property indicated against it?
1 \(\mathrm{\mathrm{Ti} < \mathrm{V} < \mathrm{Cr} < \mathrm{Mn}}\) : increasing number of oxidation states
2 \(\mathrm{\mathrm{Ti}^{3+} < V^{3+} < \mathrm{Cr}^{3+} < \mathrm{Mn}^{3+}}\) : increasing magnetic moment
The melting points of the transition element first rise to a maximum and then fall as the atomic number increases manganese have abnormally low melting point.
CHXII08:THE D- & F-BLOCK ELEMENTS
321515
The calculated spin only magnetic moment of \(\mathrm{\mathrm{Cr}^{2+}}\) ion is
321516
Assertion : \(\mathrm{Fe}^{2+}\) is paramagnetic. Reason : \(\mathrm{Fe}^{2+}\) contains four unpaired electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electronic configuration of \(\mathrm{Fe}:[\mathrm{Ar}] 3 \mathrm{~d}^{6} 4 \mathrm{~s}^{2}\) Electronic configuration of \(\mathrm{Fe}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{6}\) which has four unpaired electrons and is paramagnetic. So option (1) is correct.
321513
The magnetic moment of a transition metal compounds has been calculated to be 3.87 B.M. The metal ion is
1 \(\mathrm{Mn}^{2+}\)
2 \(\mathrm{Cr}^{2+}\)
3 \(\mathrm{V}^{2+}\)
4 \(\mathrm{Ti}^{2+}\)
Explanation:
\(\mathrm{V}^{2+}\) has outer electronic configuration as \(3{{\rm{d}}^3}4{{\rm{s}}^0}\) with \({\rm{n}} = 3\) \(\mu=\sqrt{\mathrm{n}(\mathrm{n}+2)}\) \(\mu=\sqrt{3(3+2)}\) \(=\sqrt{15}=3.87 \mathrm{BM}\)
JEE - 2023
CHXII08:THE D- & F-BLOCK ELEMENTS
321514
Which one of the following does not correctly represent the correct order of the property indicated against it?
1 \(\mathrm{\mathrm{Ti} < \mathrm{V} < \mathrm{Cr} < \mathrm{Mn}}\) : increasing number of oxidation states
2 \(\mathrm{\mathrm{Ti}^{3+} < V^{3+} < \mathrm{Cr}^{3+} < \mathrm{Mn}^{3+}}\) : increasing magnetic moment
The melting points of the transition element first rise to a maximum and then fall as the atomic number increases manganese have abnormally low melting point.
CHXII08:THE D- & F-BLOCK ELEMENTS
321515
The calculated spin only magnetic moment of \(\mathrm{\mathrm{Cr}^{2+}}\) ion is
321516
Assertion : \(\mathrm{Fe}^{2+}\) is paramagnetic. Reason : \(\mathrm{Fe}^{2+}\) contains four unpaired electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electronic configuration of \(\mathrm{Fe}:[\mathrm{Ar}] 3 \mathrm{~d}^{6} 4 \mathrm{~s}^{2}\) Electronic configuration of \(\mathrm{Fe}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{6}\) which has four unpaired electrons and is paramagnetic. So option (1) is correct.
321513
The magnetic moment of a transition metal compounds has been calculated to be 3.87 B.M. The metal ion is
1 \(\mathrm{Mn}^{2+}\)
2 \(\mathrm{Cr}^{2+}\)
3 \(\mathrm{V}^{2+}\)
4 \(\mathrm{Ti}^{2+}\)
Explanation:
\(\mathrm{V}^{2+}\) has outer electronic configuration as \(3{{\rm{d}}^3}4{{\rm{s}}^0}\) with \({\rm{n}} = 3\) \(\mu=\sqrt{\mathrm{n}(\mathrm{n}+2)}\) \(\mu=\sqrt{3(3+2)}\) \(=\sqrt{15}=3.87 \mathrm{BM}\)
JEE - 2023
CHXII08:THE D- & F-BLOCK ELEMENTS
321514
Which one of the following does not correctly represent the correct order of the property indicated against it?
1 \(\mathrm{\mathrm{Ti} < \mathrm{V} < \mathrm{Cr} < \mathrm{Mn}}\) : increasing number of oxidation states
2 \(\mathrm{\mathrm{Ti}^{3+} < V^{3+} < \mathrm{Cr}^{3+} < \mathrm{Mn}^{3+}}\) : increasing magnetic moment
The melting points of the transition element first rise to a maximum and then fall as the atomic number increases manganese have abnormally low melting point.
CHXII08:THE D- & F-BLOCK ELEMENTS
321515
The calculated spin only magnetic moment of \(\mathrm{\mathrm{Cr}^{2+}}\) ion is
321516
Assertion : \(\mathrm{Fe}^{2+}\) is paramagnetic. Reason : \(\mathrm{Fe}^{2+}\) contains four unpaired electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electronic configuration of \(\mathrm{Fe}:[\mathrm{Ar}] 3 \mathrm{~d}^{6} 4 \mathrm{~s}^{2}\) Electronic configuration of \(\mathrm{Fe}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{6}\) which has four unpaired electrons and is paramagnetic. So option (1) is correct.
