MCQ
An electronic transition from $1s$ orbital of an atom causes
- ✓Absorption of energy
- BRelease of energy
- CBoth release or absorption of energy
- DUnpredictable
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$C{H_3} - C \equiv N\xrightarrow[{E{t_2}O}]{{C{H_3}Mgl}}\xrightarrow{{{H_3}{O^ \oplus }}}$
($X$ is a halogen)