The correct answer is neon. Neon is a noble gas that is colorless, odorless, and tasteless. It is the second most abundant element in the Earth’s atmosphere, after nitrogen. Neon is used in a variety of applications, including lighting, signs, and lasers.
Chlorine is a pale yellow-green gas that is highly reactive. It is the second most abundant halogen in the Earth’s atmosphere, after fluorine. Chlorine is used in a variety of applications, including water treatment, bleach production, and pesticides.
Fluorine is a pale yellow-green gas that is the most reactive element in the periodic table. It is the most abundant halogen in the Earth’s crust, after chlorine. Fluorine is used in a variety of applications, including toothpaste, dental fillings, and nuclear power plants.
Iodine is a purple-black solid that is the least reactive of the halogens. It is the least abundant halogen in the Earth’s crust, after fluorine. Iodine is used in a variety of applications, including antiseptics, photography, and food coloring.
Neon is brighter than the other non-metals because it has a lower ionization energy. This means that it takes less energy to remove an electron from a neon atom, which allows it to emit more light.