This section contains questions each with two columns I and II.
Match the items given in column I with that in the column II.
|COLUMN - I||COLUMN - II|
|a.||mixed oxide||i.||Metallic hydride|
|d.||Salt-like hydride||iv.||Hydrogen compounds of non-metals|
.hydrogen with metals forms metal hydrides in which it has negative charge, with non metal hydrides it forms positive charge