Other Nonmetals
The other nonmetals are:
Properties of other nonmetals:
Other nonmetals are usually brittle
They are very poor conductors for heat and electricity
They have no metallic luster, and do not reflect light.
Other nonmetals can be gases and solids.
Other nonmetals light, soft and have low density.
Some of the other nonmetals are flammable (Hydrogen, Carbon, Phosphorus and Sulfur). Nitrogen is nonflammable and oxygen helps combustion of other materials.
They have a low melting and boiling points.
When you go across the periodic table from carbon to nitrogen to oxygen, the number of valence electrons increases from 4 to 5 to 6.
Atomic properties of other nonmetals:
| Element | Period | Group | Atomic Number | Valence Electrons | Electron configuration |
|---|---|---|---|---|---|
| Hydrogen (H) | 1 | 1 | 1 | 1 | 1s1 |
| Carbon (C) | 2 | 14 | 6 | 4 | [He] 2s2 2p2 |
| Nitrogen (N) | 2 | 15 | 7 | 5 | [He] 2s2 2p3 |
| Oxygen (O) | 2 | 16 | 8 | 6 | [He] 2s2 2p4 |
| Phosphorus (P) | 3 | 15 | 15 | 5 | {Ne] 3s2 3p3 |
| Sulfur (S) | 3 | 16 | 16 | 6 | [Ne] 3s2 3p4 |
| Selenium (Se) | 4 | 16 | 34 | 6 | [Ar] 3d10 4s2 4p4 |