Multiple choice Arrange the following in increasing order of ligand strengths: NO3− 2. NCS− 3. NH3 4. NO2− 1 < 2 < 3 < 4 2 < 3 < 1 < 4 2 < 1 < 4 < 1 3 < 2 < 1 < 4 4 < 3 < 2 < 1 Reveal answer Fill a bubble to check yourself B Correct answer Explanation Correct order of ligand strengths is NO3− < NCS− < NH3 < NO2−.