Editing Character table (section)

=== Total vibrational modes for water molecule ===
Total vibrational mode, <math>\Gamma_{\text{vibrational}} = \Gamma_{\text{irreducible}} - \Gamma_{\text{translational}} - \Gamma_{\text{rotational}}</math>

<math>= (3A_1 + A_2 + 3B_1 + 2B_2) - (A_1 + B_1 + B_2) - (A_2 + B_1 + B_2)</math>

<math>= 2A_1 + B_1</math>

So, total <math>2+1 = 3</math> vibrational modes are possible for water molecules and two of them are symmetric vibrational modes (as <math>2A_1</math>) and the other vibrational mode is antisymmetric (as <math>1B_1</math>)