AP EAMCET2016Chemistrys Block Elements
Consider the following statements. I. Cs ⁺ ion is more highly hydrated than other alkali metal ions. II. Among the alkali metals, only lithium forms a stable nitride by direct combination with nitrogen. III. Among the alkali metals Li , Na , K , Rb , the metal, Rb has the highest melting point. IV. Among the alkali metals Li , Na , K , Rb , only Li forms peroxide when heated with oxygen. Select the correct statement
Options
- AI
- BII
- CIII
- DIV
Correct answer
B. II
Step-by-step solution
Li is the only alkali metal which reacts directly with N ₂ to give nitride ( Li ₃ ~N )6 Li + N ₂ 2 Li ₃ ~N