Ar
Some element that is unreactive, like any of the rare gases helium, neon, argon etc.
Mg (magnesium)
They are actually elements so that is pure substances. Mixtures are more than one type of element that are in the same space but not touching. Compounds are like mixtures but they are touching.
Hydrogen is the most common element in the universe and it is in a class of its own as it is the simplest and lightest element, consisting of only one proton and one electron. It is found in stars, gas giants, and interstellar space.
The properties of an element are more closely related to its atomic structure, specifically the number of protons, neutrons, and electrons it has. These properties include atomic mass, atomic number, chemical reactivity, and physical characteristics like melting and boiling points. The arrangement of electrons in the outermost shell also plays a significant role in determining an element's properties.
There are six noble gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn) and all have similar properties.
Aluminum and helium cannot be combined to create a lightweight metal. Aluminum is a metal on its own with specific properties, while helium is a gas that does not form chemical bonds with metals like aluminum.
Well it is partly true. Helium has physical properties like density, boiling point, conductivity etc. But it has no chemical property.
Helium is a gas . . . it has neither strength nor brittleness.
Helium is a colorless, odorless, and tasteless gas that is the second lightest and second most abundant element in the universe. It is known for its low density and non-reactive properties, making it commonly used in applications like filling balloons or as a coolant in cryogenics.
Elements in the same group or column on the periodic table have similar chemical properties. Helium is in group 18 or the Nobel gases. Elements with similar chemical properties would be the rest of the elements below Helium Neon, Argon, Krypton, Xenon, and Radon
Helium is classified as a light element because it has a low atomic mass compared to other elements like oxygen or iron. It is lighter than air, which is why helium-filled balloons float.
Helium does not have a luster because it is a noble gas.
Some element that is unreactive, like any of the rare gases helium, neon, argon etc.
Only in a nuclear collider like CERN. It is an element.
Neon and argon, the two elements immediately below helium in column 18 of a wide form periodic table.
Fluorine.