Question

Number of compounds with one lone pair of electrons on central atom amongst following is
$CIF_3, XeO_3, BrF_5, XeF_4, O_3, NH_3$,$H_2O$

Answer 1

To determine the number of compounds with one lone pair on the central atom, let’s examine each compound:

• O 3: Contains one lone pair on the central oxygen atom.
• H 2O: Contains two lone pairs on the central oxygen atom.
• SF 4: Contains one lone pair on the sulfur atom.
• ClF 3: Contains two lone pairs on the chlorine atom.
• NH 3: Contains one lone pair on the nitrogen atom.
• BrF 5: Contains one lone pair on the bromine atom.
• XeF 4: Contains two lone pairs on the xenon atom.

From the above, the compounds with exactly one lone pair on the central atom are: O 3, SF4, NH3, and BrF 5.

Total: 4 Compounds

So, the correct answer is: 4