Question

Allylides are ionic carbides. They contain:
A. `C^(4-)` ions
B. `C_(2)^(2-)` ions
C. `C_(3)^(2-)` ions
D. `C_(3)^(4-)` ions

Answer 1

Correct Answer - D
Allylides gives `1`-propyne on hydrolysis with water, e.g.
`Mg_(2)C_(3)+4H_(2)Oto2Mg(OH)_(2)+CH_(3)^(-)C CH`
Such compounds contain `C_(3)^(4-)[:underset(..)ddotC-C-=C:]^(4-)` ions.