The correct statements about sodium and its compounds include:

CHEMISTRY · Multi correct · A Level · Chemistry · Group 2 elements (alkaline earth metals) · Group 2 elements (alkaline earth metals)

Problem

The correct statements about sodium and its compounds include: (1) Sodium forms an ionic hydride,

\text{NaH}

. (2) Sodium nitrate decomposes to sodium nitrite on heating. (3) Sodium is a hard metal. (4) Sodium carbonate decomposes readily on heating.