Question

which among the following carbide is methanide?
a)Al4C3
b)CaC2
c)Zn2C
d)SiC​

Answer 1

Answer : $Al_{4}C_{3}$

Explanation : A Methanide Carbide, by definition, has a $C_{4}$ Carbon centre. From the options that have been given, only $Al_{4}C_{3}$ qualifies under this condition, hence, that is the correct option. It is useful to note that such Methanide Carbides decompose easily in water, showing that these are not very stable compounds.