Hydrogen is lightest gas not helium. This is because hydrogen has smallest atomic mass. Was this answer helpful?

It has the least mass so it will be the lightest gas. So, the correct answer is “Option D”. Note: In balloons, hydrogen and helium gases are used. Helium gas is ...

Hydrogen is the lightest element. Thus, the helium is not the lightest gas. But it is the second lightest element. The given statement is not true. Hence, (B) ...

2 янв. 2016 г. · Hydrogen is the lightest gas on Earth. It has only a proton and a electron. One mole of hydrogen weighs only 1 gm while one mole of helium ... Why is helium so light? - Quora Which is the lightest gas? - Quora After hydrogen then helium, which are the next lightest gases? What is the lightest gas in the air? - Quora Другие результаты с сайта www.quora.com

The correct option is A. Hydrogen · Helium is the lightest gas. · What is the atomicity ? · The atoms of which of the following pair of elements are most likely to ...

It is the second-lightest and second most abundant element in the observable universe, after hydrogen. It is present at about 24% of the total elemental mass, ...

Hydrogen and helium are the two lightest gasses, they weigh so less that helium balloons and hydrogen dirigibles are able to float in the atmosphere.

8 нояб. 2023 г. · The lightest gas is (A) Hydrogen. Hydrogen has an atomic weight of 1.008, which is lighter than helium, with an atomic weight of 4.002602.

Answer: Among all gases, hydrogen and helium are the two lightest gases. Diatomic hydrogen is twice as heavy as helium, both are still significantly lighter ...