11. THE P-BLOCK ELEMENTS
Explanation:
(c) Lapis Lazuli is a rock composed mainly of the following mineral, lazurite, hauynite sodalite, nosean, calcite, pyrite, lapis lazuli is actually sulphur containing, sodium aluminium silicate having chemical composition \(3N{a_2}O.3A{l_2}.6Si{O_2}.2N{a_2}S\).