Sulfur (S) belongs to Group 16 (VIA) of the periodic table, also known as the chalcogens. Elements within the same group share similar chemical and physical properties due to having the same number of valence electrons.

Therefore, elements with similar properties to sulfur are:

* Oxygen (O): Oxygen is the most abundant element in the Earth's crust and is essential for life. Like sulfur, it forms oxides and is a good oxidizing agent.

* Selenium (Se): Selenium is a metalloid that is used in semiconductors and photocopiers. It has similar chemical properties to sulfur but is more metallic.

* Tellurium (Te): Tellurium is a metalloid that is used in alloys and solar cells. It is less reactive than sulfur and selenium but still has similar chemical properties.

* Polonium (Po): Polonium is a radioactive element that is very rare and highly toxic. It has similar chemical properties to sulfur but is much more metallic and unstable.

Here's a summary of the similarities and differences:

| Element | Valence Electrons | Reactivity | Metallic Character |

|---|---|---|---|

| Oxygen (O) | 6 | High | Non-metallic |

| Sulfur (S) | 6 | Moderate | Non-metallic |

| Selenium (Se) | 6 | Moderate | Metalloid |

| Tellurium (Te) | 6 | Low | Metalloid |

| Polonium (Po) | 6 | Very low | Metallic |

Note: The properties of elements gradually change as you move down a group. Oxygen is the most non-metallic, while polonium is the most metallic.