Which type of intermolecular forces exist among the following molecules ?
(i) `H_(2)S` molecules
(ii) `H_(2)O` molecules
(iii) `CL_(2)` and `C Cl_(4)` molecules
(iv) `SiH_(4)` molecules
(v) Helium atomms
(vi) He atoms HCl molecules

Explanation

To determine the types of intermolecular forces that exist among the given molecules, we will analyze each one step by step.

### Step 1: Analyze `H2S` (Hydrogen Sulfide)
- **Polarity**: `H2S` is a polar molecule due to the difference in electronegativity between hydrogen and sulfur.
- **Intermolecular Forces**: The primary intermolecular forces present in `H2S` are **dipole-dipole interactions**.

### Step 2: Analyze `H2O` (Water)
- **Polarity**: `H2O` is also a polar molecule, and it has a bent shape which contributes to its polarity.
...