Draw the possible isomers of:
\[ [ \text{Co}(\text{en})_2\text{Cl}_2 ]^+ \]
Draw the possible isomers of:
\[ [ \text{Co}(\text{en})_2\text{Cl}_2 ]^+ \]
Solution and Explanation
Possible Isomers of the Complex
The complex ion:
\[ [ \text{Co}(\text{en})_2\text{Cl}_2 ]^+ \]
can have two types of geometric isomers: cis and trans.
- Cis isomer: Both Cl− ions are adjacent to each other.
- Trans isomer: The Cl− ions are opposite each other.
Here, “en” stands for ethylenediamine, which is a bidentate ligand. The arrangement of these ligands and the chloride ions around the cobalt center gives rise to these two possible geometric isomers.
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The incorrect statements regarding geometrical isomerism are:
(A) Propene shows geometrical isomerism.
(B) Trans isomer has identical atoms/groups on the opposite sides of the double bond.
(C) Cis-but-2-ene has higher dipole moment than trans-but-2-ene.
(D) 2-methylbut-2-ene shows two geometrical isomers.
(E) Trans-isomer has lower melting point than cis isomer.
- What is metamerism?
- What are chiral and achiral compounds?
- Given below are two statements: Statement (I):
Statement (II):
In the light of the above statements, choose the correct answer from the options given below: - Which of the following is not a chiral molecule?
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Alexia Limited invited applications for issuing 1,00,000 equity shares of ₹ 10 each at premium of ₹ 10 per share.
The amount was payable as follows:- On application ₹ 9 per share (Including premium ₹ 6 per share)
- On allotment ₹ 8 per share (Including premium ₹ 4 per share)
- On first and final call ₹ 3 per share.
Applications were received for 1,50,000 equity shares and allotment was made to the applicants as follows:
Category A: Applicants for 90,000 shares were allotted 70,000 shares.
Category B: Applicants for 60,000 shares were allotted 30,000 shares.
Excess money received on application was adjusted towards allotment and first and final call.
Shekhar, who had applied for 1200 shares failed to pay the first and final call. Shekhar belonged to category B.
Pass necessary journal entries for the above transactions in the books of Alexia Limited. Open calls in arrears and calls in advance account, wherever necessary.