I believe you mean silicon nitride. Please see the link.
If you think to silicon nitride, Si3N4, this is a chemical compound with covalent bonds.
K3N is not an element. It is a compound known as potassium nitride.
The formula for copper(I) nitride is Cu3N. Nitride has a valency of -3
This is the chemical formula of calcium nitride.
Sodium Nitride is Na3N
Magnesium(I) Nitride is the name of Mg3N.
Lithium Nitride
126 protons are in nitride.
The formula is CrN. It is called Chromium nitride and Chromium(III) nitride. Chromium also forms second interstitial nitride, dichromium nitride - Cr2N
The chemical formula for a nitride ion is N-3.
Zinc nitride: Zn3N2
No, the nitride ion has a 3- charge