How to define atomic mass with an example?
Answers
Answer:
It consists of one proton and one electron. The atomic mass for an atom of hydrogen is one dalton, which is calculated from the lone proton. Remember, electrons are too small to be considered in the atomic mass. Helium is the second lightest element, and is larger than hydrogen.
Please mark it as the brainliest answer if it helps u
Answer:
Explanation:
Open main menu
Wikipedia
Search
Atomic mass
Language
Download PDF
Watch
Edit
Not to be confused with Standard atomic weight, Mass number, or Relative atomic mass.
For the band, see Atomic Mass (band).
The subject of this article is affected by the 2019 redefinition of the SI base units, which came into effect on 20 May 2019. As such, it may need to be revised to reflect those changes.
Stylized lithium-7 atom: 3 protons, 4 neutrons, and 3 electrons (total electrons are ~1⁄4300th of the mass of the nucleus). It has a mass of 7.016 Da. Rare lithium-6 (mass of 6.015 Da) has only 3 neutrons, reducing the atomic weight (average) of lithium to 6.941.
The atomic mass (ma) is the mass of an atom. Its unit is the dalton (symbol: Da, or u) where 1 dalton is defined as 1⁄12 of the mass of a single carbon-12 atom, at rest.[1] The protons and neutrons of the nucleus account for nearly all of the total mass of atoms, with the electrons and nuclear binding energy making minor contributions. Thus, the atomic mass measured in Da has nearly the same value as the mass number.
Mark as brainlist