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What is the particle that determines the mass of an atom is called what?
Protons, neutrons and electrons
What are the particles in orbit around an atom called?
Electrons orbit the Nucleus. the Nucleus contains protons and neutrons. The proton contains positive in charge (+) and Neutrons are neutral. (=) However, electrons are the ones with negative charge. (-)
Which term describes the sum of the number of protons and neutrons in an atom?
when you could check in most of atoms that we have you will see that the sum of protons and electrons equals to or is called the atomic weight or atomic mass...that is if you add protons to electrons you have your atomic mass.
An element's atomic mass does not include the mass of its?
An element's atomic mass does not include the mass of its electrons. Electrons have such a small mass compared to protons and neutrons that they are not typically included in calculations of atomic mass.
How is mass related to electrons?
because the electrons plus the nuetrons equal the mass
Why mass of electrons is excluded from atomic mass?
The mass of electrons is not excluded from atomic mass. The mass number of an isotope of an element excludes electrons because it is the sum of protons and neutrons.From Wikipedia, "The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units. The atomic mass is the total mass of protons, neutrons and electrons in a single atom."
What is the mass of 3 electrons?
depends on the electrons
Do electrons have mass?
Yes, electrons have a mass of 9.1094 X 10−31 kg.
When calculating an atoms approximate mass how is the mass of electrons figured?
electrons are the same as protons
Which particle spins around the nucleus?
These particles are called electrons, have a negative charge and a very small mass.
Who is credited with showing particles called electrons with mass and charge?
J J Thomson, the British physicist.
When bromine reacts with other elements it gains electrons gaining electrons does not effect the mass of the bromine atoms explain why?
electrons have no mass
