In allene (C3H4) the type(s) of hybridisation of the carbon atoms, is (are)

Question

In allene (C3H4) the type(s) of hybridisation of the carbon atoms, is (are) (A) sp and sp3 (B) sp and sp2 (C) only sp3 (D) sp2 and sp3

Tardigrade Admin · Accepted Answer

Allene is the name given to propdiene, underset textAlleneH2C = C = CH2 Hybridisation of an atom is determined by determining the number of hybrid orbitals at that atom which is equal to the number of sigma (σ) bonds plus number of lone pairs at the concerned atom. Pi(π) bonds are not formed by hybrid orbitals, therefore, not counted for hybridisation. Here, the terminal carbons have only three sigma bonds associated with them, therefore, hybridisation of terminal carbons is sp3. The central carbon has only two sigma bonds associated, hence hybridisation at central carbon is sp

Q. In allene $(C_{3} H_{4})$ the type(s) of hybridisation of the carbon atoms, is (are)

$s p$ and $s p^{3}$

$s p$ and $s p^{2}$

only $s p^{3}$

$s p^{2}$ and $s p^{3}$

Q. In allene (C3​H4​) the type(s) of hybridisation of the carbon atoms, is (are)

sp andsp3

sp and sp2

only sp3

sp2 andsp3

Q. In allene $(C_{3} H_{4})$ the type(s) of hybridisation of the carbon atoms, is (are)

$s p$ and $s p^{3}$

$s p$ and $s p^{2}$

only $s p^{3}$

$s p^{2}$ and $s p^{3}$