The most stable ion is
(a) [Fe(OH)3]3–
(b) [Fe(Cl)6]3–
(c) [Fe(CN)6]3–
(d) [Fe(H2O)6]3+.
1 Answers
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What are isoelectronic ions? Account for the decrease in size of following species oxide ion > Fluoride ion > sodium ion > magnesium ion.
The ions having same number of electrons are called isoelectronic ions. The above order is due to increasing order of effective nuclear charge.
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Thermodynamically the most stable form of carbon is (a) diamond (b) graphite (c) fullerenes (d) coal
(b) Graphite is thermodynamically the most stable form of carbon.
1 Answers 1 views
In a complex ion [Co(NH3)5NO2]Cl2, (i) Identify the ligand. (ii) Oxidation number of metal ion.
(i) NH3, NO2. (ii) + 3
1 Answers 1 views
Which one is most stable to heat – (a) HClO
(d) As the oxidation state of the central halogen atom increases, the halogen-oxygen bond becomes more and more covalent. As a result the thermal stability of the oxoacid increases. Thus,...
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State reasons for the following: (i) Cu(I) ion is not stable in an aqueous solution.
(i) This is because Cu(I) ion is unstable in aqueous solution and undergo disproportionation. 2Cu + (aq) → Cu2+ (aq) + Cu(s) (ii) This is because due to lanthanoid contraction the expected increase...
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Which of the following compounds is most stable : LiF ,LiBr,LiCl,LiI ?
LiF.............
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PbCl4 is less stable than SnCl4 but PbCl2 is more stable than SnCl2. Justify?
due to inert pair effect +4 valency is less stable than +2 in case of Pb.
1 Answers 1 views
Explain why (CH3)3C^+ is more stable than CH3C^+H2 and C^+H3 is the least stable cation.
Greater the number of alkyl groups attached to a positively charged carbon atom, the greater is the hyperconjugation interaction and stabilisation of the cation.
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Which one of the carbocations is most stable?
(a) (CH3)3 C+
1 Answers 1 views
Which of the following carboxylate ions is the most stable a)CH3COO^- b) ClCH2COO^-
(d) F2CHCOO-
1 Answers 5 views