Two. the sulfide ion is S2- so two K+ ions are required to balance the charges
two potassium ions balance one sulfide ion. Potassium is K+, Sulfide is -2, so 2xK+ + 1x-2 = 0
so it can be balanced out
4 because its a cool number
Exactly 2
The chemical formula of potassium dichromate is K2Cr2O7
two potassium ions balance one sulfide ion. Potassium is K+, Sulfide is -2, so 2xK+ + 1x-2 = 0
so it can be balanced out
Normally, 2 K+ ions are required for making a stable ionic bond with one S 2- anion. The compound formed would be Potassium Sulfide (K2S).
4 because its a cool number
Potassium has a formal charge of +1, and sulfide has a formal charge of -2, so: K2S
so it can be balanced out
Sulfide is a sulfur ion with -2 charge.
Exactly 2
Ferrous Sulfide = Iron (III) Sulfide Both -> Fe2S3
Sulfide is divalent ion. it is S2-
Usually if potassium has a charge, it is +1.
sulfide=sulfur+2 electrons(to fill the outermost energy level) sulfur=16 protons-16 electrons=0 (which is newtrons) sulfide=16 protons-18 electrons(by adding 2 electrons to fill the outermost energy level) =-2