What two subatomic particles contain most of the mass?

What two subatomic particles contain most of the mass?

Neutrons and protons constitute almost all of an atom’s mass. The third type of stable particle is the electron. Electrons have a negative charge but are extremely small and have a mass only 1/1850 that of a proton or neutron. They are so small that for practical purposes they do not contribute to the mass of the atom.

What two subatomic particles are equal?

Remember, electrons are negatively-charged and are attracted to the positively-charged protons in the nucleus. An atom is considered to be electrically neutral if it has an equal number of protons and electrons. If an atom has a different number of electrons and protons, it is called an ion.

Which two of the following have a similar mass?

The two subatomic particles that have the same mass are protons and neutrons.

Have about the same mass and account for most of the mass in a an atom?

The nucleus contains the majority of an atom’s mass because protons and neutrons are much heavier than electrons, whereas electrons occupy almost all of an atom’s volume.

What particles have equal masses?

The nuclear particles, protons and neutrons, are conceived to have a positive electronic charge, and a neutral charge respectively. The protonic mass is 1.672621898(21)×10−27⋅kg . And the neutron mass is 1.674927471(21)×10−27⋅kg , so to a first approx. these masses are equal.

Which subatomic particles make up the mass of an atom?

Neutrons are located in the nucleus with the protons. Along with protons, they make up almost all of the mass of the atom.

What subatomic particles account for most of the mass of the atom?

protons
Neutrons are located in the nucleus with the protons. Along with protons, they make up almost all of the mass of the atom.

Which subatomic particles have approximately the same mass?

Protons and neutrons have approximately the same mass. However, one proton is about 1,835 times more massive than an electron. Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well.

Which subatomic particles make up most of the mass of the atom?

The majority of an atoms’ mass comes from the protons and neutrons that make up its nucleus. Electrons are the least massive of an atom’s constituent particles, with a mass of 9.11 x 10-31 kg and a size too small to be measured by current techniques.