The question is vague, as shell can mean valence shell or inner shells that can also fit atoms via 'sharing' for transition metals, however, the number of atoms that can fit would determine on the number of electrons and vacant spots available for sharing on the outermost electronic shell. (Assume the question in mind is for covalent bonding; does not apply to ionic bonding.)
The maximum number of electrons that can fit in a shell is given by the formula 2n^2, where n represents the shell number. Each electron corresponds to one atom. Therefore, the maximum number of atoms that can fit in a shell is equal to the maximum number of electrons that can occupy that shell.
Atoms in groups 1 and 2 have 1 and 2 valence electrons, respectively. Group 1 elements have 1 electron in their outermost shell, while group 2 elements have 2 electrons in their outermost shell.
It would depend on the type of atom. Atoms of different elements come in different sizes. We can take an average of about 1 angstrom, that is 10^-10 meters or 10^-8 cm. Using that average you would need 10^8 atoms.
1-butene has four carbon atoms.
Four atoms with 1 electron in their outermost shells will bond with one atom that has 4 electrons in its outermost shell. This results in the formation of a stable compound with each atom achieving a full outer shell of electrons through sharing or transferring of electrons.
The answer is Valence Electrons. Atoms want a full number of electrons in their outer shell, which is why atoms with only one electron missing from their outer shell are most reactive, because they are close to completing that shell. Electrons as such are half-spin particles or fermions. A single particle electron orbital (intended as a solution of a 1-D Schrödinger equation) with occupancies 0 and 1 can have 2 allowed quantum states. Electrons are seen as indistinguishable particles in quantum mechanics. In other words electron 1 is the same as electron 2. We can then state that any electron of appropriate energy will be able to occupy the outermost shell of an element.
Approximately 1 million atoms can fit across the width of a human hair.
There can be 10 electrons in the n=2 shell. Two can fit in the 1s orbital, two can fit in the 2s orbital, and six can fit in the 2p orbital.
The hydrogen atom (1H) has only 1 proton and 1 electron (you probably think at this electron).
Metals.
The atoms it is made out of do not have 1 or 2 valence electron on the outer shell, so therefore they do not conduct electricity well. Atoms that do have 1 or 2 valence electron on the outer shell, like copper, conduct electricity well.
When a group 1 metal reacts, its outer shell electron(s) are transferred to another atom or shared in a chemical bond. This results in the metal ion having a full outer shell of electrons, usually achieved by losing one electron to become stable with a +1 charge.
Chlorine exists as a diatomic molecule (Cl2) because each chlorine atom needs to gain one electron to achieve a stable electron configuration, forming a single covalent bond between them. This sharing of electrons allows both atoms to achieve a full outer shell, making the molecule more stable.
The overall of an atom is a nucleus (protons and neutrons), and 1 or 2 electrons. The rest are for large atoms: an electron shell, electrons, an electron shell, electrons, an electron shell, electrons, an electron shell, electrons, an electron shell, electrons, an electron shell, electrons, an electron shell, electrons.
Atoms in column 7 of the Periodic Table have 7 electrons in their outer shell. Atoms are most stable when they have 8 electrons in their outer shell. So atoms of elements in column 7 have a strong attraction for 1 electron. Flourine being the smallest atom in that column has the strongest attraction for 1 electron.
Atoms with the same number of valence electrons in the same electron shell are represented by elements in the same group on the periodic table. For example, elements in Group 1 (such as lithium, sodium, potassium) all have 1 valence electron in the outermost shell.
How many* and it has 1 electron in it's outer shell, and only has the 1 shell.
Oxygen is a non-metal in the 6A Group, so it needs 2 electrons to reach 8 in its outer shell. Sodium is a metal in the 1A Group, so it has 1 electron in its outer shell to donate. Since the oxygen needs 2, but a sodium can only donate 1, the oxygen will get an electron from two sodium atoms, giving the formula:Na2O