A coordination complex compound of cobalt has a molecular formula containing five ammonia molecules, one nitro group, and two chlorine atoms for one cobalt atom. One mole of this compound produces three-mole ions in an aqueous solution. By the reaction of this solution with excess silver nitrate solution, two molecules of AgCl get precipitated. The ionic formula of this compound would be:
Correct answer: C. [Co(NH3)5NO2]Cl2
- A. [Co(NH3)4NO2Cl] [(NH3)Cl]
- B. [Co(NH3)5Cl] [Cl(NO2)]
- C. [Co(NH3)5NO2]Cl2
- D. [Co(NH3)5] [(NO2)2Cl2]
Explanation
Because only (C) gives two moles of AgCl with AgNO3 and yields three ions (including two ionizable Cl- ions) in an aqueous solution.[Co(NH3)5NO2]Cl2] [Co(NH3)5NO2]2+ + 2Cl-
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
Practise Transition Elements
531 free Transition Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Transition Elements questions
Which has a complex anion?
In lithium tetrahydroaluminate, the ligand is:
Mohr's salt is a:
The charge on cobalt in [Co(CN)6]3- is:
Which of the following is not a simple salt?
When FeCl3 reacts with K3[Fe(CN)6] no blue colour is observed. K3[Fe(CN)6] is used as an indicator in the estimation of Fe2+ by Cr2O7 2- ion in an acidic medium. End point will be when: