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NARAYNA-D BLOCK & TRANSITION ELEMENTS-Level-V (H.W)
- There are 3 unpaired electrons in [Co(H(2)O)(6)]^(2+) and calculated v...
04:04
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- Metallic radii of some transitions element are given below. Which of t...
01:38
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- Which of the following is amphoteric oxide? Mn(2)O(7),CrO(3),Cr(2)O(...
02:12
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- The magnetic moment is associated with its spin angular momentum and o...
01:15
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- Ionisation energies of Ni and Pt in KJmol^(-1) are given below {:(,u...
02:22
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- Atoms of the transition element are smaller than those of the s-block ...
01:12
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- Standard reduction electrode potential of Zn^(2+)//Zn is -0.76V. This ...
03:03
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- E^(Theta) value for the couple Cr^(3+)//Cr^(2+) and Mn^(3+)//Mn^(2+) a...
02:59
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- Of the ions Zn^(2+),Ni^(2+) and Cr^(3+) (atomic number Zn=30,Ni=28,Cr=...
03:14
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- Iron is rendered passive by treatment with concentrated
01:27
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- Which of the following dissolves in hot concentrated NaOH solution?
01:32
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- Among the following, identify the species with an atom in +6 oxidation...
02:27
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- The pair of compounds having metals in their highest oxidation state i...
04:26
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- Which of the following pair of compounds is expected to exhibit same c...
03:50
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- Among the following the coloured compound is .
02:57
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- The colour of KMnO(4) is due to
01:15
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- Which of the following statement are correct about Cr^(2+) (Z = 24) an...
04:03
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- Aqurated copper (I) catin undergoes disproportionation as 2Cu^(+)(a...
01:35
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- In solution, the stability of the d-block compounds depends upon elect...
05:11
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- Which of the following is the best oxidant?
01:50
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