Ionisation energy of hydrogen is much higher than those of alkali metals. In case of the former combines with the latter, which type of compound will be formed? Explain when $$H_2$$ reacts with C at high temperature, what type of hydride will be formed. Give the chemical equations.
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$$2Na + H_2 \rightarrow {2NaH}$$ Ionic hydride will be formed, $$C + 2H_2 \xrightarrow {Heat} {CH_4}$$ Methane gas is a covalent hydride
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