NEET Chemistry The s-Block Elements Questions Solved


When sodium metal is dissolved in liquid ammonia, a blue solution is formed. The blue colour is due to:

(a) solvated Na+ ions

(b) solvated electrons

(c) solvated NH2-ions

(d) solvated protons

(b) Na + (x+y)NH3           NaNH3x+ + eNH3y-;

This ammoniated electron is responsible for blue colour of solution, reducing nature and good conductor nature of solution.

Difficulty Level:

  • 15%
  • 57%
  • 27%
  • 4%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 27, 2019)