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Beryillium
Nitrogen.
Silicon ... or more correctly silicon oxide.
Mercury is commonly used in the batteries of cell phones and laptops.
Cadmium can be used along with nickel in batteries. These types of batteries are commonly found in watches.
Because Europium is fairly difficult to obtain it has few practical uses. Europium is unique in the fact that it can absorb more neutrons per atom then any other element. Thus making Europium and its isotopes very valuable in control rods of nuclear reactors. Like many other transition metals Europium is used in producing certain alloys, including striker and lighter flints. It's also been used in the creation of infrared absorbing automotive glass. Europium's compound, Europium Oxide, is often used as a phosphor activator. Europium's other two roles are also involved with phosphors. Europium is used in the production of phosphors for the creation of small lasers. But perhaps what Europium is known best for is the production of the red phosphors that are found in all color television screens.
Red, blue and green are the three colours.
it's an element Common Uses of Yttrium Used to make europium and europium phosphors that give the red color in color television picture tubes Color TV's Radars Microwave filters.
Cadmium (and compounds) is used in batteries, coatings, pigments, alloys, phosphors etc.
The most common way of making an object glow in the dark is to use chemicals called phosphors to produce light. But I'm not certan that is used in paint.
Applications of yttrium and yttrium compounds: synthetic aluminium-yttrium and other garnets, minor alloying element for other metals, additive to stabilize zirconium oxide, special glasses or ceramics, component of superconductors, the isotope Y-90 is used in radiotherapy of cancers, phosphors for TV screens etc.
Color tvs, cancer therapy, fireworks, and yeah......
The first element in the fourth period, which is used in making fertilizer, is potassium.
It is used in making neon advertising signs, which accounts for its largest use and slo to make high-voltage indicators, lightning arrestors, wave meter tubes, and TV tubes. Neon (and helium) are used in making gas lasers and liquid neon is an economical cryogenic refrigerant.
Nitrogen is.
The element that is used in the making of supersonic airplane wings is titanium. Titanium is a chemical element with the symbol Ti and the atomic number 22.