IF you have 2 complete full shells and no electrons any were else that means you have
2 electrons in the first shell
and 8 electrons in the second shell
which is 10 electrons in other words it is neon
They have completely filled shells, with eight valence electrons (stable) and hence are inert.
They have filled valence shells. Atoms undergo chemical bonding in order to have filled valence shells by sharing electrons or transferring electrons. Because the noble gases already have filled valence shells, they have no need to react with other elements.
Helium has 2 valence electrons and has completely filled orbitals / shells and helium is stable.
completely filled valence shells
they have completely filled shells (or orbitals) and are hence stable and unreactive.
The atom that has 2 completely filled electron shells and no electrons anywhere else is helium. Helium has a total of 2 electrons, with both shells being completely filled with 2 electrons in the first shell.
A neutral xenon atom has 54 electrons. Two of its electron shells would be completely filled, with 2 and 8 electrons, leaving 44 electrons in the remaining electron shells.
They have completely filled shells, with eight valence electrons.
They have completely filled shells, with eight valence electrons (stable) and hence are inert.
A neutral atom of calcium has 20 electrons arranged in the electron shells. The electron configuration for calcium is 2-8-8-2. The first two shells (K and L) are completely filled, while the M shell is partially filled with 2 electrons.
A neutral atom of calcium has 20 electrons. Electrons fill the electron shells in order of increasing energy levels, with the first shell holding a maximum of 2 electrons, the second shell holding a maximum of 8 electrons, the third shell holding a maximum of 18 electrons, and the fourth shell holding the remaining 2 electrons. Thus, three electron shells (the first three shells) would be completely filled by a neutral atom of calcium.
A neutral xenon atom has 8 electron shells with 6 completely filled shells and 2 partially filled shells.
Noble gases have completely filled valence electrons. Helium has 2, other elements have 8
They have filled valence shells. Atoms undergo chemical bonding in order to have filled valence shells by sharing electrons or transferring electrons. Because the noble gases already have filled valence shells, they have no need to react with other elements.
A neutral xenon atom has 54 electrons. The electron configuration of xenon is [Kr] 4d^10 5s^2 5p^6, with a total of 8 completely filled electron shells (2 in the first shell, 8 in the second shell, 18 in the third shell, 18 in the fourth shell, and 8 in the fifth shell).
Helium has 2 valence electrons and has completely filled orbitals / shells and helium is stable.
A neutral xenon atom would have 54 electrons filled in its electron shells.