MCQ
(image) $\xrightarrow{\Delta }X;X$ can also be formed by


- A$CH_3-CH_2-CH_2-Cl \xrightarrow{{LiAl{H_4}}}$
- B$CH_3-CH_2-COOH \xrightarrow{{P + HI}}$
- ✓$C{H_3} - C \equiv CH\xrightarrow[{{H_2}O}]{{H{g^{ + 2}}}}$
- DAll

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$1.$ The state $S_1$ is
$(A)$ $1 \mathrm{~s}$ $(B)$ $2 \mathrm{~s}$ $(C)$ $2 \mathrm{p}$ $(D)$ $3 \mathrm{~s}$
$2.$ Energy of the state $S_1$ in units of the hydrogen atom ground state energy is
$(A)$ $0.75$ $(B)$ $1.50$ $(C)$ $2.25$ $(D)$ $4.50$
$3.$ The orbital angular momentum quantum number of the state $S_2$ is
$(A)$ $0$ $(B)$ $1$ $(C)$ $2$ $(D)$ $3$
Give the answer question $1,2$ and $3.$