Complete step by step answer: - Hydrogen ($H_2$) is the lightest element in the universe. It is a gas. - Its atomic number is 1 and atomic mass is 1.00794 amu.

16 нояб. 2020 г. · Hydrogen is the lightest and the most plentiful element in the universe. Hydrogen, denoted by the symbol H, has an atomic number of one and ... What atom is the lightest? - Quora What are the most light elements on Earth? - Quora What is the lightest element that stays in earth's atmosphere? What is the lightest element? - Quora Другие результаты с сайта www.quora.com

Answer:- (C) Hydrogen Explanation:- Hydrogen is the simplest and lightest element and the most common in the entire universe.

1 мар. 2023 г. · The observed amounts of the lightest chemical elements, such as hydrogen, deuterium, helium, and lithium, imply that these elements were created ...

14 нояб. 2019 г. · In general, heavier elements are rare and light elements are abundant, but there are three big exceptions: lithium, beryllium, and boron.

Hydrogen is the lightest element in the universe with atomic number 1 and so, it has the simplest atomic structure. Was this answer helpful? upvote 0.

Hydrogen has an atomic weight of 1.00794u and it accounts for 75% of the matter in the universe thus making it as the lightest and most abundant element in the ...

24 мар. 2022 г. · Hydrogen is the lightest and most common element in the universe, consisting of just a single proton and a single electron, with the chemical ...

Key Points. H is the symbol of hydrogen element. Hydrogen elements are the lightest element in nature on earth. It contains only one proton.