How many methanides are perfect in the following carbides?
$S i C, C a C_{2}, B e_{2} C, A l_{2} C_{6}, A l_{4} C_{3}, B_{4} C$

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Solution

Methanides are carbides which on hydrolysis give methane $(C H_{4})$ . The most common examples are aluminium carbide $(A l_{4} C_{3})$ , which is a pale yellow solid and beryllium carbide $(B e_{2} C)$ , which is a Red solid .
Hence 2 methanides here are perfect.

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How many methanides are perfect in the following carbides?SiC,CaC2,Be2C,Al2C6,Al4C3,B4C

Methanides are carbides which on hydrolysis give methane (CH4) . The most common examples are aluminium carbide (Al4C3), which is a pale yellow solid and beryllium carbide (Be2C), which is a Red solid .Hence 2 methanides here are perfect.

How many methanides are perfect in the following carbides?
$S i C, C a C_{2}, B e_{2} C, A l_{2} C_{6}, A l_{4} C_{3}, B_{4} C$

Methanides are carbides which on hydrolysis give methane $(C H_{4})$ . The most common examples are aluminium carbide $(A l_{4} C_{3})$ , which is a pale yellow solid and beryllium carbide $(B e_{2} C)$ , which is a Red solid .
Hence 2 methanides here are perfect.