Fluorine, at 19 Atomic Mass units, is the only halogen gas that fits that requirement.
Bromine (Br2) is the third most reactive halogen.
Sulfur atomic mass: 32 a.m.e.Chlorine atomic mass: 35.5 a.m.e.Iron atomic mass: 56 a.m.e.
The element with a mass of less than 30 and is a noble gas is Neon (Ne). Neon has an atomic mass of around 20.18 and is a colorless, odorless gas commonly used in neon signs due to its bright red-orange glow when electrified.
Element A has a greater atomic mass than element B if the atomic mass value of A is higher. The atomic mass represents the average mass of an element’s isotopes based on their abundance in nature.
No, the mass number of an atom is always equal to or greater than the number of protons in its nucleus. The mass number is the sum of the protons and neutrons in an atom. If an atom had fewer protons than its mass number, it would be a different element altogether.
Any element, other than a halogen is - by definition - not a halogen and so it does not have a halogen and that is less than one halogen.
No halogen gas has a mass of under 15 atomic mass units. The closest is fluorine, at 19.0 atomic mass units.
The element with less than one ounce existing on Earth is astatine. It is a rare halogen element and is primarily produced through artificial means due to its scarcity in nature.
Element 34, Selenium, has an atomic mass of about 78.96.
No element can have those features; the mass can never be less than the atomic number in any element.
well a lot of elements have atomic mass so then you would have to look at the periodic table to find the right answer
Bromine (Br2) is the third most reactive halogen.
Two elements can have the same atomic mass if one has more or less neutrons than protons in the nucleus. These are called isotopes. not much to im prov thank you
Hydrogen's atomic mass (1 amu for the most stable isotope) is less than that of helium (4 amu).
A halide is a compound consisting of two parts; a halogen and another electronegative element. The mostcommonhalogens arefluorine(F),chlorine(Cl),bromine(Br),iodine(I), andastatine(At). If put together with another element, they formfluoride,chloride,bromide,iodide, orastatide. Therefore, your question is not right since a halide consist of elements and one element can only be a halogen or non-halogen. (halogen and halide are two different things)
Sulfur atomic mass: 32 a.m.e.Chlorine atomic mass: 35.5 a.m.e.Iron atomic mass: 56 a.m.e.
Not always -- Hydrogen-3 is radioactive, for example.