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4. First, write the formulas of the ions forming each of the ionic compounds. Next, write the formula for each of the compounds:

a. Ammonium sulfide
- Ions:
- Formula:

b. Gold(III) dihydrogen phosphate
- Ions:
- Formula:

c. Calcium oxalate
- Ions:
- Formula:

d. Cadmium dichromate
- Ions:
- Formula:



Answer :

GinnyAnswer

Final answer:

The formulas for the ionic compounds are provided based on the ions forming each compound.


Explanation:

(a) Ammonium sulfide

Ions: NH4+, S2-

Formula: (NH4)2S

(b) Gold(III) dihydrogen phosphate

Ions: Au3+, H2PO4-

Formula: Au(H2PO4)3

(c) Calcium oxalate

Ions: Ca2+, (C2O4)2-

Formula: CaC2O4

(d) Cadmium dichromate

Ions: Cd2+, Cr2O72-

Formula: CdCr2O7


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