Arrange the following in the increasing order of the property mentioned:
(i) HClO, HClO₂, HClO₃, HClO₄ (acidic strength)
(ii) MF, MCl, MBr, MI (ionic character)
(iii) HF, HCl, HBr, HI (thermal stability)
HF, HCl, HBr, HI (thermal stability)
Increasing Order of Thermal Stability: Thermal stability of hydrogen halides (HX) decreases down the group due to decreasing bond strength
(H-F) being the strongest and (H-I) the weakest. \[ HI < HBr < HCl < HF \]
For the thermal decomposition of \( N_2O_5(g) \) at constant volume, the following table can be formed, for the reaction mentioned below: \[ 2 N_2O_5(g) \rightarrow 2 N_2O_4(g) + O_2(g) \] Given: Rate constant for the reaction is \( 4.606 \times 10^{-2} \text{ s}^{-1} \).
A hydrocarbon which does not belong to the same homologous series of carbon compounds is
The slope of the tangent to the curve \( x = \sin\theta \) and \( y = \cos 2\theta \) at \( \theta = \frac{\pi}{6} \) is ___________.
Explain the construction of a spherical wavefront by using Huygens' principle.
The perpendicular distance of the plane \( r \cdot (3\hat{i} + 4\hat{j} + 12\hat{k}) = 78 \) from the origin is __________.