MCQ
Which electron transition in a hydrogen atom requires the largest amount of energy :
- ✓From $n = 1$ to $n = 2$
- BFrom $n = 2$ to $n = 3$
- CFrom $n = \infty$ to $n = 1$
- DFrom $n = 3$ to $n = 5$
The amount of energy is directly proportional to
$\left[\frac{1}{ n _1^2}-\frac{1}{ n _2^2}\right]$
This difference is maximum for the electron transition from $n=1$ to $n=2$
$\left[\frac{1}{1^2}-\frac{1}{2^2}\right]=0.75$
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$X + C{r_2}{O_3}\xrightarrow{\Delta }Y$ (Green coloured)
$X$ and $Y$ are
| Coordination number and type of hybridisation | Distribution of hybrid orbitals In space |
| $(a)$ $4, sp ^{3}$ | $(i)$ trigonal bipyramidal |
| $(b)$ $4, dsp ^{2}$ | $(ii)$ octahedral |
| $(c)$ $5, sp ^{3} d$ | $(iii)$ tetrahedral |
| $(d)$ $6, d ^{2} sp ^{3}$ | $(iv)$ square planar |
Select the correct option