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.
Aluminum is less electronegative than silicon.
Silver is less dense than gold. Gold has a higher density compared to silver, which means that a unit volume of gold will have more mass than the same volume of silver.
The formula mass of a compound that contains the element would be a larger number than the mass number of the individual element. The individual element would simply be the mass of just that one atom, where as the compound would be the mass of that atom plus the other masses of the other atoms that make up the compound. ex. Oxygen-O has a mass number of about 16 grams. Water-H2O has a formula mass of 2 x mass of Hydrogen-H (about 1) + the mass of Oxygen-O 16 = 18 grams. A formula mass of 18 g is more than a mass number of 16 g.
The noble gas with 48 neutrons and a mass of less than 100 is Krypton. It has an atomic number of 36, which means it has 36 protons in its nucleus. The total mass of Krypton is slightly less than 100 atomic mass units.
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.
Fluorine, at 19 atomic mass units, is the only halogen gas that fits that requirement.
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.