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subtract the group number from the atomic number

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Q: How does one determine the number of core electrons an atom has?
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Related questions

How do you figure out the core charge of an atom?

the atomic core charge of an atom is the same as the number of valence electrons in the atom


How the atomic number related to the core electrons?

For a neutral (uncharged) atom, the total number of electrons is equal to the atomic number (number of protons). This would be the sum of the core electrons plus the valence electrons.


What are regions in atoms where electrons reside?

Electrons are located in 'shells' around the core of on atom. They are never inside the core of an atom.


How are the parts of the atom placed in the atom?

Protons and Neutrons are in the Core of an atom, and Electrons orbit around this Core.


What does the atomic number tell you besides the number of protons in one atom of an element?

There are three main parts to an Atom. The atom comprises of protons, neutrons, and electrons. The location of each are Protons and Neutrons at the core, and Electrons in the shell **oribits around the core.** Protons and Neutrons are equal in amount unless the atom/element is an isotope.


What atom has 6 valence electrons and 10 core electrons?

Sulfur. It has six valence electrons. These six electrons plus the ten core electrons, 16, the atomic number (number of electrons or the number of protons [they are an equal amount because the positive and negative charges have to cancel each other out]). It is sulfur.


What particles are surrounding the atom?

At the core of an atom, is a mass of protons and neutrons. Orbiting the core, are the electrons.


How many core electrons in nitrogen?

Nitrogen has 2 core electrons and 5 valence electrons. If you remember, nitrogen has an atomic number of 7. When an atom is neutral it has an equal number of protons and electrons. Therfore, the overal number of electrons is 7. The definition of core electrons is, electrons in their most inner shell, On the other hand valence electrons are electrons in the outermostshell. When looking at a periodic table you see that there is a total# of 5 valence electrons. In order to figure out the core number you subtract the total number of electrons(atomic #) - Valence # of electrons. I hope this helped :)


What surrounds the core of an atom?

Electrons do surrounding the atom and rotate around the nucleus.


The core of an atom is called the which is made of and The are found outside of the atom's core?

nucleus, protons, neutrons, electrons.


What are the electrons in the outermost shell of an atom?

Valence electrons are the electrons in the outermost shell of an atom. The ones in the inner shell are known as core electrons.


How the effects of nuclear charge and the increasing number of core electrons in an atom oppose each other?

The increasing number of core electrons serve to "shield" the outer electrons from the positive charges in the nucleus. Thus, the effective nuclear charge (Zeff) is reduced.