Answer
$Li_{2}S$ - Lithium Sulphide
$SnO_{2}$ - Tin(IV) Oxide
$RbBr$ - Rubedium Bromide
$K_{2}O$ - Potassium Oxide
$Ba_{3}N_{2}$ - Barium Nitride
Work Step by Step
$Li_{2}S$ - Lithium Sulphide
$SnO_{2}$ - Tin(IV) Oxide
$RbBr$ - Rubedium Bromide
$K_{2}O$ - Potassium Oxide
$Ba_{3}N_{2}$ - Barium Nitride