1. Valence Number of Bonds (see Bonding) an atom can form. Hydrogen (H) always has valence 1, so other elements' valences equal the number of hydrogen atoms they combine with.

2. Valence Number of bonds (see bonding) an atom can form.

3. Determination of trace arsenic from water sample by hydride atom absorption, and effect of valence number of arsenic and varied coexisting ions on the determination were discussed.

4. So in terms of nitrogen that starts off with a valence number of 5, again we have 2 lone pair electrons in the nitrogen, and again, we have 6 electrons that are shared.

5. The results showed that the tensile strength and elastomeric character of ionomers increased with the increasing of valence number of ions.