MCQ
Allyl isocyanide has
- A$9$ sigma bonds and $4$ pi bonds
- B$8$ sigma bonds and $5$ pi bonds
- C$8$ sigma bonds, $3$ pi bonds and $4$ non-bonding electrons
- ✓$9$ sigma bonds, $3$ pi bonds and $2$ non-bonding electrons
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$(A)$ Line emission spectra are used to study the electronic structure
$(B)$ The emission spectra of atoms in the gas phase show a continuous spread of wavelength from red to violet
$(C)$ An absorption spectrum is like the photographic negative of an emission spectrum
$(D)$ The element helium was discovered in the sun by spectroscopic method
