Question:
The number of oxygen atoms that are directly attached to one chromium in dichromate ion are ___.
The number of oxygen atoms that are directly attached to one chromium in dichromate ion are ___.
Show Hint
In dichromate \( (Cr_2O_7^{2-}) \), each Cr has tetrahedral geometry with 4 oxygen atoms around it.
Updated On: Apr 22, 2026
Show Solution
Verified By Collegedunia
Solution and Explanation
Concept:
Structure of dichromate ion \( Cr_2O_7^{2-} \):
- Each Cr atom is surrounded by 4 oxygen atoms in a tetrahedral arrangement
- One oxygen atom acts as a bridge between the two Cr atoms
- The other three oxygen atoms are terminal
Step 1: Analyze structure.
\[ O_3Cr-O-CrO_3 \] Each Cr is bonded to: - 3 terminal oxygen atoms (double bonded) - 1 bridging oxygen atom (single bonded)
Step 2: Count for one chromium.
\[ 3 \text{ (terminal)} + 1 \text{ (bridging)} = 4 \]
Step 3: Conclusion.
Each Cr atom is directly attached to 4 oxygen atoms.
Step 1: Analyze structure.
\[ O_3Cr-O-CrO_3 \] Each Cr is bonded to: - 3 terminal oxygen atoms (double bonded) - 1 bridging oxygen atom (single bonded)
Step 2: Count for one chromium.
\[ 3 \text{ (terminal)} + 1 \text{ (bridging)} = 4 \]
Step 3: Conclusion.
Each Cr atom is directly attached to 4 oxygen atoms.
Was this answer helpful?
0
0
Top MET Chemistry Questions
- Which of the following product is formed in the reaction $ CH_3MgBr {->[(i)CO_2][(ii)H_2O]} ? $
- Ethyl chloride is converted into diethyl ether by:
- Correct order of reactivity:
- A group of 13 element if added in small amounts to Ge, then the type of semiconductor formed is
- Consider the following statements I. Repulsive forces are significant when the molecules are close together on average. II. Attractive intermolecular forces are important when the molecules are fairly close together but not necessarily touching. III. Attractive forces are ineffective when the molecules are for apart. Select correct statements.
View More Questions
Top MET properties of d block elements Questions
- Potassium dichromate is used:
- The kinetic energy of an electron gets tripled, then the de-Broglie wavelength associated with it changes by a factor
- Among \( \mathrm{Cu^{2+}}, \mathrm{Fe^{3+}}, \mathrm{Ti^{3+}} \) and \( \mathrm{Zn^{2+}} \) ions, the number of ions that impart colour is _ _ _ _ _ _ _
- What is the characteristic valence shell configuration of coinage metals?
- Which of the following ions has the highest magnetic moment?
View More Questions
Top MET Questions
- A coil of 100 turns and area $2 \times 10^{-2}m^2 $ is pivoted about a vertical diameter in a uniform magnetic field and carries a current of 5A. When the coil is held with its plane in north-south direction, it experiences a couple of 0.33 Nm. When the plane is east-west, the corresponding couple is 0.4 Nm, the value of magnetic induction is [Neglect earth's magnetic field]
- $\int\limits_{0}^{8}| x -5| d x$ is equal to
- Radiation, with wavelength 6561 $?$ falls on a metal surface to produce photoelectrons. The electrons are made to enter a uniform magnetic field of $3 \times 10^{-4} T$. If the radius of the largest circular path followed by the electrons is 10 mm, the work function of the metal is close to :
- In intrinsic semiconductor at room temperature number of electrons and holes are
- Which of the following product is formed in the reaction $ CH_3MgBr {->[(i)CO_2][(ii)H_2O]} ? $
View More Questions