Question

Is the mass of an electron taken into account for the atomic mass? why or why not?

Answer 1

Ответ:

Масса электрона при расчете атомной массы не учитывается, потому что его масса очень маленькая по сравнению с массами ядерных частиц

а теперь перевод

The mass of an electron is not taken into account when calculating atomic mass because its mass is very small compared to the masses of nuclear particles

Объяснение:

Надеюсь, помогла)

Answer 2

Yes, the mass of an electron is taken into account for the atomic mass. Atomic mass is a weighted average of the masses of all the naturally occurring isotopes of an element. Isotopes are atoms of the same element that have different numbers of neutrons in their nucleus.

The atomic mass of an element is calculated by considering the mass and relative abundance of each isotope. The mass of an isotope is determined by the sum of the masses of its protons, neutrons, and electrons. The contribution of electrons to the mass of an atom is relatively small compared to protons and neutrons, but it is still taken into account.

The reason why electrons are included in the calculation of atomic mass is that atoms are considered to be electrically neutral, meaning the number of electrons is equal to the number of protons. Therefore, the number of electrons affects the overall charge distribution and stability of the atom but not the overall mass. However, since the atomic mass considers all particles in the atom, including electrons, it provides a more accurate representation of the actual mass of the atom.