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Q.
Carbon hydrides of the type, $C_nH_{2n+2}$ do not act as Lewis acid or Lewis base. They behave as normal covalent hydrides because
Hydrogen
Solution:
Carbon hydrides with general formula $C_nH_{2n+2}$ are electron-precise hydrides like $CH_4$. They have a complete octet hence they do not behave as Lewis acid or Lewis base.