Table 4. Maximum valence of the ‘extended organic set’ of atoms (maximum number of connections allowed).
| Element | H or halogens | B | C | N | O | S | P | Se | Si |
|---|---|---|---|---|---|---|---|---|---|
| Valence | 1 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | 4 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.