NO, sure not.
Helium (He) mass = 4 g/mol
Fluorine gas (F2) mass = 2*19 = 38 g/mol (almost 10 times heavier),
although fluorine gas hardly can be held stable: it is so VERY rective, even in air!!
Yes
No. Helium is lighter than air
Hot air, hydrogen or helium are lighter than cold air.
hydrogen
A helium balloon floats up when released because helium is less dense than air. The helium inside the balloon is lighter than the surrounding air, causing it to create a buoyant force that pushes the balloon upward.
Helium is lighter than air
yes. helium is lighter than earth or even air.
Helium is lighter than hydrogen. Helium has an atomic number of 2, which means it has two protons and two neutrons in its nucleus, making it lighter than hydrogen, which has only one proton in its nucleus.
Hydrogen is about 7 lighter than helium.
helium
its the 2nd element on the periodic table and it makes things lighter, such as helium balloons, which float as helium is lighter than air
No, fluorine is more reactive than helium. Helium is a noble gas and is considered to be inert, meaning it does not readily form compounds with other elements. Fluorine, on the other hand, is a highly reactive nonmetal that readily reacts with many other elements.
Yes, helium will float in water. Helium is lighter than air, so it will also be lighter than water and rise to the surface when submerged in water.
hydrogen
Yes
No. Helium is lighter than air
Hot air, hydrogen or helium are lighter than cold air.