Identify correct statements from the following: i. Beryllium oxide is an amphoteric oxide. ii. Group II elements dissolve in liquid ammonia to form deep blue-black solutions. iii. The hydration enthalpy of group II ions decreases from ( Be

Question

Identify correct statements from the following: i. Beryllium oxide is an amphoteric oxide. ii. Group II elements dissolve in liquid ammonia to form deep blue-black solutions. iii. The hydration enthalpy of group II ions decreases from ( Be ²⁺ ) to ( Ba ²⁺ ).

Quantrex Academy · Accepted Answer

Correct answer: D. i, ii, iii

All the given statements are correct and their explanations are as follows: (i) Berylium oxide is an amphoteric oxide, i.e. it can react with both acids and bases. (ii) Group II elements dissolve in liquid ammonia to form deep blue solutions. This blue colour of the solution is due to the ammoniated electron which absorbs energy in the visible region of light and thus impart blue colour to solution. (M+(x+y) NH ₃ [M ( NH ₃ )_x ]²⁺+2 [e ( NH ₃ )_y ] ) (iii) The hydration enthalpy of group II ions decreases from ( Be

Identify correct statements from the following: i. Beryllium oxide is an amphoteric oxide. ii. Group II elements dissolve in liquid ammonia to form deep blue-black solutions. iii. The hydration enthalpy of group II ions decreases from ( Be ²⁺ ) to ( Ba ²⁺ ).

Options

Correct answer

Step-by-step solution

More from s Block Elements