The electronic configuration of gadolinium (Atomic No.64) is
Options
(a) [Xe]4f³ 5d⁵ 6s² (b) [Xe]4f⁶5d²6d² (c) [Xe]4f⁸5d⁹6s² (d) [Xe]4f⁷5d¹6s²
Correct Answer:
[Xe]4f⁷5d¹6s²
Explanation:
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Formula of ferric sulphate is
Options
(a) FeSO₄ (b) Fe(SO₄)₂ (c) Fe₂SO₄ (d) Fe₂(SO₄)₃
Correct Answer:
Fe₂(SO₄)₃
Explanation:
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The electronic configuration of transition elements is exhibited by
Options
(a) ns¹ (b) ns²np⁵ (c) ns² (n – 1) d¹⁻¹⁰ (d) ns² (n – 1)d¹⁰
Correct Answer:
ns² (n – 1) d¹⁻¹⁰
Explanation: […]
Sodium thiosulphate is added in photography to
Options
(a) improve colour of photograph (b) remove unreacted AgBr (c) form latent image (d) to form a better picture
Correct Answer:
remove unreacted AgBr
Which of the following transition element shows the highest oxidation state
Options
(a) V (b) Cr (c) Mn (d) Fe
Correct Answer:
Mn
Explanation:
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Which of the following is the most electronegative
Options
(a) Co (b) Cu (c) Ni (d) Fe
Correct Answer:
Cu
Explanation:
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Four successive members of the first row transition elements are listed below with their atomic numbers.which one of them is expected to have the highest third ionisation enthalpy
Options
(a) Vanadium (Z = […]
Mercurous chloride exists in the form of
Options
(a) Hg⁺ (b) Hg₂²⁺ (c) Hg²⁺ (d) Hg₃²⁺
Correct Answer:
Hg₂²⁺
Explanation:
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MnO₃ in an acidic medium dissociates into
Options
(a) MnO₂ and MnO₄⁻ (b) MnO and MnO₄⁻ (c) MnO₂ and MnO (d) MnO₂ and MnO₃
Correct Answer:
MnO₂ and MnO₄⁻
Explanation:
No explanation available. […]
Chromium has the most stable oxidation state
Options
(a) 2 (b) 5 (c) 4 (d) 3
Correct Answer:
3
Explanation:
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