Crayons are primarily made from pigments, wax, and binders. The specific elements present in crayons vary depending on the colors and specific ingredients used. Here's a breakdown:

Pigments: These provide the color and can be made from various elements, including:

* Inorganic pigments: These are often based on metal oxides, sulfides, or carbonates. Common examples include:

* Iron oxides: Provide reds, yellows, browns, and blacks (iron, oxygen)

* Titanium dioxide: White pigment (titanium, oxygen)

* Cadmium sulfide: Yellow pigment (cadmium, sulfur)

* Chromium oxide: Green pigment (chromium, oxygen)

* Cobalt blue: Deep blue (cobalt, oxygen)

* Organic pigments: These are typically derived from plants, animals, or synthetic sources. They often contain elements like:

* Carbon: Essential for all organic compounds

* Hydrogen: Essential for all organic compounds

* Nitrogen: Found in some organic pigments

* Oxygen: Found in all organic compounds

Wax: Crayon wax is typically made from paraffin wax, a petroleum product. This is primarily composed of hydrogen and carbon. Sometimes, other waxes like beeswax are added, which also contain carbon and hydrogen, plus oxygen.

Binders: These help hold the pigment and wax together. Common binders include:

* Resins: Natural or synthetic polymers that often contain carbon, hydrogen, and oxygen.

* Polymers: Can be based on various elements like carbon, hydrogen, oxygen, and sometimes nitrogen or chlorine.

In summary:

* Most common elements: Carbon, hydrogen, oxygen

* Other common elements: Iron, titanium, cadmium, sulfur, chromium, cobalt

* Less common elements: Nitrogen, chlorine

Keep in mind that the exact composition of a crayon can vary significantly depending on the brand and specific color.