MCQ
Number of chiral centre in the given compound is


- A$2$
- B$3$
- ✓$4$
- D$5$


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(image) $\xrightarrow{{HOH/\mathop H\limits^ \oplus }}$ $[X]$
$[X]$ will be :
$(I)$ $Be$ has smaller atomic radius compared to $Mg$
$(II)$ $Be$ has higher ionization enthalpy than $Al.$
$(III)$ Charge/radius ratio of $Be$ is greater than that of $Al$.
$(IV)$ Both Be and $Al$ form mainly covalent compounds.
$(II)$ (figure)
$(III)\, CH_3-N=CH_2$
$(IV)\, C_2H_5-CH=N-OH$