Advertisements
Advertisements
Question
Choose the most correct option.
The oxidation state of cobalt ion in the complex [Co(NH3)5 Br]SO4 is __________.
Options
+2
+3
+1
+4
Advertisements
Solution
The oxidation state of cobalt ion in the complex [Co(NH3)5Br]SO4 is +3.
Explanation:
We know, sulphate ion has a charge –2
i.e., \[\ce{SO^{2-}_4}\]
Then, [Co(NH3)5Br]2+
The oxidation state of NH3 = 0
The oxidation state of Br = –1
Let the oxidation state of Cobalt ion is x
Then, x + (3 × 0) × 5 + (–1) = +2
⇒ x – 1 = +2
⇒ x = +3
Therefore the oxidation state of cobalt ion is +3.
RELATED QUESTIONS
Answer the following in one or two sentences.
What is the shape of a complex in which the coordination number of the central metal ion is 4?
Hybridization of cobalt in [Co(NH3)6]3+ complex ion is _____________
The geometry of [CoF6]3– complex ion is _______.
Write coordination number of Fe3+ in [Fe(C2O4)3]3− complex ion.
Write chemical composition of carnalite.
Write four postulates of Werner’s theory.
Distinguish between double salt and coordination complex.
Define Anionic sphere complex.
Define coordination number.
The coordination number and oxidation state of Cr in K3[Cr(C2O4)3] are respectively ____________.
What is the secondary valence of CO3+ ion according to Werner's theory in [Co(NH3)4Cl2]+?
The hybridization of cobalt in [CoF6]3− and [Co(NH3)6]3+ are ____________ respectively.
According to Werner's theory the geometry of the complex is determined by ______.
The coordination number of central metal atom/ion in a complex is ____________.
Which among the following is a correct formula of Pentammineaquacobalt (III) iodide?
What is oxidation state of iron in potassium hexacyano ferrate (II)?
Which oxidation states CORRECTLY represent the usual range exhibited by the stated metal?
The charge number and coordination number of 2+ the complex [Co(en)2Cl2]2+ are ____________ respectively.
Identify the formula of potassiumtrioxalatoaluminate (III).
What is the value of primary valence of copper chloride according to Werner's theory?
Which of the following is a property of coordination compound and not of double salt?
Which of the following types of valences, according to Werner's theory is also called as primary valence?
Define coordination sphere. Give example.
Give the primary and secondary valencies of cobalt in the coordination compound [Co(NH3)6]Cl3.
Find out the oxidation state of cobalt ions in the complex [Co(NH3)5Br]S04.
