First slide

Alkaline earth metals

Question

Which of the following carbides produces propyne on

Moderate

A

${CaC}_{2}$
B

${Be}_{2} C$
C

${Al}_{4} C_{3}$
D

${Mg}_{2} C_{3}$

Solution

$C_{3}^{- 4}$ ions are present in the salt.

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