Among the following, the correct statements are: I. LiH, Be\({H}_{2}\) and Mg\({H}_{2}\) are saline hydrides with signif…
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Among the following, the correct statements are:
I. LiH, Be\({H}_{2}\) and Mg\({H}_{2}\) are saline hydrides with significant covalent character
II. Saline hydrides are volatile
III. Electron - precise hydrides are Lewis bases
IV. The formula for chromium hydride is CrH
✓ Correct answer: c)
I, IV only
Explanation
Saline hydrides are not volatile as the strong ionic bonds keep the constituent ions together. Thus, statement II is incorrect. Electron-precise hydrides like \(C\)\({H}_{4}\), \(Si{H}_{4}\), act as pH - neutral species. Thus, statement 3 is incorrect.
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