MCQ
Which of the following compound show optical isomerism?
- Acis $-[CrCl_3 (NHI_3)_3]$
- ✓$[Co(en)_3]^{3+}$
- Ccis $- [Co(NH_3)_4Cl_2]^+$
- Dtrans $-[Co(en)_2 Cl_2]^+$

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(Given: $\Delta H _{\text {vap }}$ for water at $373\, K =41\, kJ / mol$, $\left. R =8.314\, JK ^{-1} mol ^{-1}\right)$
$(a)$ Effective nuclear charge for nitrogen is $3.90$
$(b)$ $IP$ of $Ne$ is more than $Na^+$
$(c)$ Order of electron negativity $sp > sp^2 > sp^3$
$(d)$ Order of acidic character $NH_3 < PH_3 < AsH_3$
$Image$
$P$ is
| Column-I (Alcohol) | Column-II (Product) |
| a. $1^0$ alcohol | i. Ketone |
| b. $2^0$ alcohol | ii. Alkene |
| c. $3^0$ alcohol | iii. Aldehyde |