Which of the following ions has the maximum magnetic moment
Options
(a) Mn²⁺ (b) Fe²⁺ (c) Ti²⁺ (d) Cr²⁺
Correct Answer:
Mn²⁺
Explanation:
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The common oxidation state shown by lanthanides in their compounds is
Options
(a) ⁺1 (b) ⁺3 (c) ⁺5 (d) ⁺6
Correct Answer:
⁺3
Explanation:
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Transition elements
Options
(a) do not act as catalysts (b) have low melting point (c) exhibit variable valency (d) exhibit inert pair effect
Correct Answer:
exhibit variable valency
Explanation:
No explanation available. Be […]
Which of the following is an amphoteric oxide
Options
(a) CrO₃ (b) Cr₂ O₃ (c) V₂ O₃ (d) TiO
Correct Answer:
Cr₂ O₃
Explanation:
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Magnetic moment of (NH₄)₂[MnBr₄] is ___ BM
Options
(a) 5.91 (b) 4.91 (c) 3.91 (d) 2.46
Correct Answer:
5.91
Explanation:
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Which of the following is expected to form colourless complex
Options
(a) Ni²⁺ (b) Cu⁺ (c) Ti³⁺ (d) Fe³⁺
Correct Answer:
Ti³⁺
Explanation:
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In dichromate dimer
Options
(a) 4 Cr – O bonds are equal (b) 6 Cr – O bonds are equal (c) all Cr – O bonds are equal (d) all Cr – O […]
When a mixture of solid Nacl and solid K₂Cr₂O₇ is heated with concentrated sulphuric acid, the orange red vapours obtained are due to
Options
(a) chromic chloride (b) chromous chloride (c) chromyl chloride […]
Non – lanthanide element is
Options
(a) La (b) Lu (c) Pr (d) Pm
Correct Answer:
La
Explanation:
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The most common lanthanide is
Options
(a) samarium (b) lanthanum (c) plutonium (d) cerium
Correct Answer:
cerium
Explanation:
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