Select ionic carbides.

A l_{4} C_{3}, C a C_{2}, M_{g 2} C_{3}

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$ Al_{4} c_{3}, Sic,B_{4} C

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C a C_{2}, M_{g 2} C_{3}

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C a C_{2}, M_{g 2}, S i c, M_{g 2} C_{3}

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Solution

The correct option is A $A l_{4} C_{3}, C a C_{2}, M_{g 2} C_{3}$
Carbide is a compound of carbon with less electronegative element.
The most electropositive metals form ionic carbides. Examples: $A l_{4} C_{3}, C a C_{2}, M g_{2} C_{3}$
Non-metals of electronegativity similar to that of carbon form covalent carbides.
Example: $S i C, B_{4} C$

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Similar questions

S i C, C a C_{2}, B e_{2} C, A l_{2} C_{6}, A l_{4} C_{3}, B_{4} C

C a C_{2}, A l_{4} C_{3} a n d M g_{2} C_{3}

H_{2} O

25^{o} C .

C a C_{2} (s) + 2 H_{2} O (l) \to C a (O H)_{2} (s) + C_{2} H_{2} (g)

A l_{4} C_{3} (s) + 12 H_{2} O (l) \to 4 A l (O H)_{3} (s) + 3 C H_{4} (g)

M g_{2} C_{3} (s) + 4 H_{2} O (l) \to 2 M g (O H)_{2} (s) + C H_{3} - C \equiv C H (g)

B e_{2} C, C a C_{2}, M g_{2} C_{3}, A l_{4} C_{3}, C H_{4},

Which is not obtained when metal carbides react with H₂O?

C a C_{2}

A l_{4} C_{3}

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