Which of the following complexes exhibits both geometrical and optical isomerism?
- A$[Co(en)_2Cl_2]^+$
- B$[Co(NH_3)_5Cl]^{2+}$
- C$[Co(NH_3)_4Cl_2]^+$
- D$[Cr(OX)_3]^{3-}$
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Match the $\frac{C_P}{C_V}$ ratio for ideal gases with different types of molecules:
Molecule type $\frac{C_P}{C_V}$ $A$. Monoatomic $I$. $\frac{7}{5}$ $B$. Diatomic rigid molecules $II$. $\frac{9}{7}$ $C$. Diatomic non-rigid molecules $III$. $\frac{4}{3}$ $D$. Triatomic rigid molecules $IV$. $\frac{5}{3}$
| Molecule type | $\frac{C_P}{C_V}$ |
|---|---|
| $A$. Monoatomic | $I$. $\frac{7}{5}$ |
| $B$. Diatomic rigid molecules | $II$. $\frac{9}{7}$ |
| $C$. Diatomic non-rigid molecules | $III$. $\frac{4}{3}$ |
| $D$. Triatomic rigid molecules | $IV$. $\frac{5}{3}$ |
Which of the following hydrides is the least stable?
Explain why $BeH_{2}$ molecule has a zero dipole moment although the $Be-H$ bonds are polar.
The value of $\lim_{n \rightarrow \infty} \frac{1}{n^3} \sum_{k=1}^n (k^2 x)$ is
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