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the first one can hold up to 2 electrons

second can hold up to 8 electrons

third can also hold up to 8 electrons

and the last one can hold up to 18 electrons

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What is electronic shells?

A shell surrounding the nucleus of an atom containing electrons.


What particles are found in each main part of the atom?

Protons and neutrons are found in the atom's nucleus. Electrons are found somewhere outside of the nucleus in shells of probability, called the electron cloud.


Where is each subatomic particle located in a atom?

electron - electron cloud protons and neutron- nucleus


How are electrons arranged in the atom?

Electrons are arranged in energy levels or shells around the nucleus of an atom. The first shell can hold up to 2 electrons, while the second and third shells can hold up to 8 electrons each. The electrons fill up the shells in order of increasing energy levels.


What are the layers of electrons surroundingthe nucleus of an atom called?

The layers of electrons surrounding the nucleus of an atom are called electron shells or energy levels. These shells represent the different energy levels at which electrons can orbit around the nucleus. Each shell can hold a specific number of electrons based on its capacity.


What holds electrons in their shells?

The electrons "orbit" the nucleus of an atom. They do so because they are attracted to the positive charge of the protons inside the nucleus. They do not usually leave the atom because of this attraction, and do not usually fall into the nucleus because they are moving.


The addition of electron shells results in?

The addition of electron shells results in more shielding of electrons from the nucleus.


Where on an atom can electrons can be found?

Electrons can be found in regions of space around the nucleus called electron shells or energy levels. These shells are designated by the principal quantum number, with the first shell closest to the nucleus and subsequent shells further away. Within each shell, electrons occupy specific orbitals, which are specific regions where electrons are most likely to be found.


What is the number of electrons which are in each shell around the nucleus for the element technetium?

The electron shells of technetium contain 2, 8, 18, 32 and 2 electrons.


What is in the middle of each atom?

Protons and neutrons. They are located in the nucleus (the middle of the atom).


What are the layers of elecrons surrounding the nucleus of an atom called?

The layers of electrons surrounding the nucleus of an atom are called electron shells or energy levels. These shells are designated by the numbers 1, 2, 3, and so on, with each shell able to hold a specific maximum number of electrons.


Where in the atom do you find each of the subatomic particles?

The only subatomic particle that has any role in chemistry is the electron.