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Question
Match the properties given in Column I with the metals given in Column II.
| Column I (Property) | Column II (Metal) | |
| (i) | Element with highest second ionisation enthalpy |
(a) \[\ce{Co}\] |
| (ii) | Element with highest third ionisation enthalpy |
(b) \[\ce{Cr}\] |
| (iii) | \[\ce{M}\] in \[\ce{M(CO)6}\] is | (c) \[\ce{Cu}\] |
| (iv) | Element with highest heat of atomisation |
(d) \[\ce{Zn}\] |
| (e) \[\ce{Ni}\] |
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Solution
| Column I (Property) | Column II (Metal) | |
| (i) | Element with highest second ionisation enthalpy |
(c) \[\ce{Cu}\] |
| (ii) | Element with highest third ionisation enthalpy |
(d) \[\ce{Zn}\] |
| (iii) | \[\ce{M}\] in \[\ce{M(CO)6}\] is | (b) \[\ce{Cr}\] |
| (iv) | Element with highest heat of atomisation |
(a) \[\ce{Co}\] |
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| Column I (Aqueous solution of salt) |
Column II (Colour) |
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| (ii) \[\ce{NiCl2.4H2O}\] | (b) Light pink |
| (iii) \[\ce{MnCl2.4H2O}\] | (c) Blue |
| (iv) \[\ce{CoC12,6H2O}\] | (d) Pale green |
| (v) \[\ce{Cu2 Cl2}\] | (e) Pink |
| (f) Colourless |
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Reason (R): Greater number of unpaired electrons in transition metals results in weak metallic bonding.
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‘Spin only’ magnetic moment is the same for which of the following ions?
- Ti3+
- Cr2+
- Mn2+
- Fe2+
- Sc3+
Choose the most appropriate answer from the options given below:
