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What are the chemical formulas for sodium hydride and calcium hydride?

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The chemical formulas for these saline (ionic) hydrides are as follows:

Sodium hydride: NaH12
Calcium hydride: CaH₂134

These compounds are classified as saline hydrides because they contain the hydride anion ( $H^{-}$ ) and are typically formed through the direct reaction of alkali metals or alkaline-earth metals with hydrogen at elevated temperatures. Both substances are known to react vigorously with water to produce hydrogen gas.1324