321448
Which of the following ions forms most stable complex compound?
1 \(\mathrm{\mathrm{Cu}^{2+}}\)
2 \(\mathrm{\mathrm{Ni}^{2+}}\)
3 \(\mathrm{\mathrm{Fe}^{2+}}\)
4 \(\mathrm{\mathrm{Mn}^{2+}}\)
Explanation:
The magnitude of stability constants for some divalent metal ions of the first transition series with oxygen or nitrogen donar ligands increases in the order: \(\rm{\mathrm{Mn}^{2+} < \mathrm{Fe}^{2+} < \mathrm{Co}^{2+} < \mathrm{Ni}^{2+} < \mathrm{Cu}^{2+} < \mathrm{Zn}^{2+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321449
Which of the following statements concerning transition elements is false?
1 They are all metals
2 They easily form complex coordination compounds
3 They form compounds containing unpaired electrons and their ions are mostly coloured
4 They show multiple oxidation states always differing by units of two
Explanation:
The false statement about transition elements is that they show multiple oxidation states always differing by units of two, because they show variable oxidation state but not always have a difference of two units, e.g. Mn exhibit oxidation state from +1 to +7 .
CHXII08:THE D- & F-BLOCK ELEMENTS
321450
Urea reacts with water of form A which will decompose to form B. B When passed through \(\mathrm{\mathrm{Cu}^{2+}(\mathrm{aq})}\), deep blue colour solution \(\mathrm{\mathrm{C}}\) is formed. What is the formula of \(\mathrm{\mathbf{C}}\) from the following?
321451
Assertion : Transition metals form complexes. Reason : Transition metals have 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:
Transition metals form complexes due to the comparatively smaller sizes of the metal ions, their high ionic charges and the availability of d orbitals for bond formation. Transition metal ions do contain unpaired electrons. So option (2) is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS
321452
Which of the following statement regarding transition elements is false?
1 Their atoms contain partially filled ' \(\mathrm{d}\) ' orbitals.
2 They are capable of showing variable valencies.
3 All of their ions are colourless.
4 They form complexes readily.
Explanation:
Colour of transition elements depends upon number of unpaired electrons.
321448
Which of the following ions forms most stable complex compound?
1 \(\mathrm{\mathrm{Cu}^{2+}}\)
2 \(\mathrm{\mathrm{Ni}^{2+}}\)
3 \(\mathrm{\mathrm{Fe}^{2+}}\)
4 \(\mathrm{\mathrm{Mn}^{2+}}\)
Explanation:
The magnitude of stability constants for some divalent metal ions of the first transition series with oxygen or nitrogen donar ligands increases in the order: \(\rm{\mathrm{Mn}^{2+} < \mathrm{Fe}^{2+} < \mathrm{Co}^{2+} < \mathrm{Ni}^{2+} < \mathrm{Cu}^{2+} < \mathrm{Zn}^{2+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321449
Which of the following statements concerning transition elements is false?
1 They are all metals
2 They easily form complex coordination compounds
3 They form compounds containing unpaired electrons and their ions are mostly coloured
4 They show multiple oxidation states always differing by units of two
Explanation:
The false statement about transition elements is that they show multiple oxidation states always differing by units of two, because they show variable oxidation state but not always have a difference of two units, e.g. Mn exhibit oxidation state from +1 to +7 .
CHXII08:THE D- & F-BLOCK ELEMENTS
321450
Urea reacts with water of form A which will decompose to form B. B When passed through \(\mathrm{\mathrm{Cu}^{2+}(\mathrm{aq})}\), deep blue colour solution \(\mathrm{\mathrm{C}}\) is formed. What is the formula of \(\mathrm{\mathbf{C}}\) from the following?
321451
Assertion : Transition metals form complexes. Reason : Transition metals have 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:
Transition metals form complexes due to the comparatively smaller sizes of the metal ions, their high ionic charges and the availability of d orbitals for bond formation. Transition metal ions do contain unpaired electrons. So option (2) is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS
321452
Which of the following statement regarding transition elements is false?
1 Their atoms contain partially filled ' \(\mathrm{d}\) ' orbitals.
2 They are capable of showing variable valencies.
3 All of their ions are colourless.
4 They form complexes readily.
Explanation:
Colour of transition elements depends upon number of unpaired electrons.
321448
Which of the following ions forms most stable complex compound?
1 \(\mathrm{\mathrm{Cu}^{2+}}\)
2 \(\mathrm{\mathrm{Ni}^{2+}}\)
3 \(\mathrm{\mathrm{Fe}^{2+}}\)
4 \(\mathrm{\mathrm{Mn}^{2+}}\)
Explanation:
The magnitude of stability constants for some divalent metal ions of the first transition series with oxygen or nitrogen donar ligands increases in the order: \(\rm{\mathrm{Mn}^{2+} < \mathrm{Fe}^{2+} < \mathrm{Co}^{2+} < \mathrm{Ni}^{2+} < \mathrm{Cu}^{2+} < \mathrm{Zn}^{2+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321449
Which of the following statements concerning transition elements is false?
1 They are all metals
2 They easily form complex coordination compounds
3 They form compounds containing unpaired electrons and their ions are mostly coloured
4 They show multiple oxidation states always differing by units of two
Explanation:
The false statement about transition elements is that they show multiple oxidation states always differing by units of two, because they show variable oxidation state but not always have a difference of two units, e.g. Mn exhibit oxidation state from +1 to +7 .
CHXII08:THE D- & F-BLOCK ELEMENTS
321450
Urea reacts with water of form A which will decompose to form B. B When passed through \(\mathrm{\mathrm{Cu}^{2+}(\mathrm{aq})}\), deep blue colour solution \(\mathrm{\mathrm{C}}\) is formed. What is the formula of \(\mathrm{\mathbf{C}}\) from the following?
321451
Assertion : Transition metals form complexes. Reason : Transition metals have 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:
Transition metals form complexes due to the comparatively smaller sizes of the metal ions, their high ionic charges and the availability of d orbitals for bond formation. Transition metal ions do contain unpaired electrons. So option (2) is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS
321452
Which of the following statement regarding transition elements is false?
1 Their atoms contain partially filled ' \(\mathrm{d}\) ' orbitals.
2 They are capable of showing variable valencies.
3 All of their ions are colourless.
4 They form complexes readily.
Explanation:
Colour of transition elements depends upon number of unpaired electrons.
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII08:THE D- & F-BLOCK ELEMENTS
321448
Which of the following ions forms most stable complex compound?
1 \(\mathrm{\mathrm{Cu}^{2+}}\)
2 \(\mathrm{\mathrm{Ni}^{2+}}\)
3 \(\mathrm{\mathrm{Fe}^{2+}}\)
4 \(\mathrm{\mathrm{Mn}^{2+}}\)
Explanation:
The magnitude of stability constants for some divalent metal ions of the first transition series with oxygen or nitrogen donar ligands increases in the order: \(\rm{\mathrm{Mn}^{2+} < \mathrm{Fe}^{2+} < \mathrm{Co}^{2+} < \mathrm{Ni}^{2+} < \mathrm{Cu}^{2+} < \mathrm{Zn}^{2+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321449
Which of the following statements concerning transition elements is false?
1 They are all metals
2 They easily form complex coordination compounds
3 They form compounds containing unpaired electrons and their ions are mostly coloured
4 They show multiple oxidation states always differing by units of two
Explanation:
The false statement about transition elements is that they show multiple oxidation states always differing by units of two, because they show variable oxidation state but not always have a difference of two units, e.g. Mn exhibit oxidation state from +1 to +7 .
CHXII08:THE D- & F-BLOCK ELEMENTS
321450
Urea reacts with water of form A which will decompose to form B. B When passed through \(\mathrm{\mathrm{Cu}^{2+}(\mathrm{aq})}\), deep blue colour solution \(\mathrm{\mathrm{C}}\) is formed. What is the formula of \(\mathrm{\mathbf{C}}\) from the following?
321451
Assertion : Transition metals form complexes. Reason : Transition metals have 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:
Transition metals form complexes due to the comparatively smaller sizes of the metal ions, their high ionic charges and the availability of d orbitals for bond formation. Transition metal ions do contain unpaired electrons. So option (2) is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS
321452
Which of the following statement regarding transition elements is false?
1 Their atoms contain partially filled ' \(\mathrm{d}\) ' orbitals.
2 They are capable of showing variable valencies.
3 All of their ions are colourless.
4 They form complexes readily.
Explanation:
Colour of transition elements depends upon number of unpaired electrons.
321448
Which of the following ions forms most stable complex compound?
1 \(\mathrm{\mathrm{Cu}^{2+}}\)
2 \(\mathrm{\mathrm{Ni}^{2+}}\)
3 \(\mathrm{\mathrm{Fe}^{2+}}\)
4 \(\mathrm{\mathrm{Mn}^{2+}}\)
Explanation:
The magnitude of stability constants for some divalent metal ions of the first transition series with oxygen or nitrogen donar ligands increases in the order: \(\rm{\mathrm{Mn}^{2+} < \mathrm{Fe}^{2+} < \mathrm{Co}^{2+} < \mathrm{Ni}^{2+} < \mathrm{Cu}^{2+} < \mathrm{Zn}^{2+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS
321449
Which of the following statements concerning transition elements is false?
1 They are all metals
2 They easily form complex coordination compounds
3 They form compounds containing unpaired electrons and their ions are mostly coloured
4 They show multiple oxidation states always differing by units of two
Explanation:
The false statement about transition elements is that they show multiple oxidation states always differing by units of two, because they show variable oxidation state but not always have a difference of two units, e.g. Mn exhibit oxidation state from +1 to +7 .
CHXII08:THE D- & F-BLOCK ELEMENTS
321450
Urea reacts with water of form A which will decompose to form B. B When passed through \(\mathrm{\mathrm{Cu}^{2+}(\mathrm{aq})}\), deep blue colour solution \(\mathrm{\mathrm{C}}\) is formed. What is the formula of \(\mathrm{\mathbf{C}}\) from the following?
321451
Assertion : Transition metals form complexes. Reason : Transition metals have 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:
Transition metals form complexes due to the comparatively smaller sizes of the metal ions, their high ionic charges and the availability of d orbitals for bond formation. Transition metal ions do contain unpaired electrons. So option (2) is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS
321452
Which of the following statement regarding transition elements is false?
1 Their atoms contain partially filled ' \(\mathrm{d}\) ' orbitals.
2 They are capable of showing variable valencies.
3 All of their ions are colourless.
4 They form complexes readily.
Explanation:
Colour of transition elements depends upon number of unpaired electrons.