The number of valence electrons depends on the element and it could have 1 to 8 valence electrons.
The outermost energy level of an atom is known as the valence shell. In general, the valence shell can hold up to 8 electrons. However, the number of electrons that actually fill the valence shell can vary depending on the element and its position in the periodic table.
The number of valence electrons needed to fill the outermost energy level varies depending on the atom's position on the periodic table. For most elements, the outermost energy level can hold up to 8 electrons to become stable. However, elements in the first few periods may require fewer electrons to fill their outermost level.
In an argon atom, the outermost principle level is the third principle level (n=3). The sublevels that are occupied in this principle level are the s, p, and d sublevels. The s sublevel can hold a maximum of 2 electrons, the p sublevel can hold a maximum of 6 electrons, and the d sublevel can hold a maximum of 10 electrons.
In the ground state, the outermost principle energy level of an argon atom is the third energy level. This energy level contains the 3s and 3p sublevels. The 3s sublevel can hold up to 2 electrons, while the 3p sublevel can hold up to 6 electrons.
2. the number of electrons on the outermost level is always equal to the group number. Barium is group 2 therefore it's outermost energy level contains 2 electrons
The third level of an atom can hold a maximum of 18 electrons.
The 3rd energy level of an atom can hold a maximum of 18 electrons.
The first energy level of an atom can hold a maximum of 2 electrons.
The third energy level of an atom can hold eight electrons.
Helium has two electrons total, and the second energy level can hold a maximum of 8 electrons. However, in the case of helium, the second energy level will only contain two electrons as it is the outermost energy level.
In a neon atom, the first energy level or orbit can hold up to 2 electrons, the second energy level can hold up to 8 electrons, and the third energy level can hold up to 8 electrons. Therefore, a neon atom would have 2 electrons in the first energy level, 8 electrons in the second energy level, and 8 electrons in the third energy level, totaling 18 electrons.
The outermost shell of an atom is determined by the number of electrons it can hold, which is based on the atom's position in the periodic table. Atoms tend to fill their outermost shell with electrons to achieve stability, following the octet rule for main group elements. The outermost shell is also known as the valence shell and is responsible for an atom's chemical behavior.