MCQ
The orbital occupied by an electron with quantum numbers $n = 4, l= 3, m = 0$ and $s = - \frac{1}{2}$ is called
- A$1s$ subshell
- B$4d$ orbital
- ✓$4f$ subshell
- D$3s$ subshell
$l=0\quad-s$
$1\quad-p$
$2\quad-d$
$3\quad-f$
$4 f$ subshell.
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$1. \,{H_3}C - \mathop O\limits^ + {H_2} \to CH_3^ + + {H_2}O$
$2.\,{(C{H_3})_3}C - \mathop O\limits^ + {H_2} \to {(C{H_3})_3}{C^ + } + {H_2}O$
$3.\,{(C{H_3})_2}CH - \mathop O\limits^ + {H_2} \to {(C{H_3})_2}C{H^ + } + {H_2}O$
'$X$ ' and ' $Y$ ' respectively are :