Hydrogen is the simplest and lightest element and the most common in the entire universe. The atomic number and mass number both are unity for hydrogen.

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

Hydrogen is the lightest element on the Earth. Hydrogen has the atomic mass value of 1.0079 a.m.u. and the atomic number is 1. It is placed in group 1A in the s ...

25 окт. 2022 г. · The lightest element present in this world is Hydrogen. The symbol for Hydrogen is [H] . It consists 1 proton and 1 electron. It's atomic number ...

Fluorine is the lightest element of Group 17 of the periodic table called halogens. This group includes chloride, bromine, iodine, and astatine. It has an ...

Hydrogen elements are the lightest element in nature on earth. It contains only one proton. it has zero neutrons. It has the lowest mass compared to other ...

9 янв. 2020 г. · Verified by Toppr The lightest element in the periodic table is hydrogen. Its atomic weight is 1.008 amu.

30 янв. 2018 г. · Hydrogen is the lightest element and exhibits the simplest atomic structure.

24 мар. 2022 г. · Hydrogen, helium, lithium and beryllium are the lightest elements in nature, and you can understand why by looking at the periodic table.