Two, as indicated by its presence in column 2 (or IIA) of a Periodic Table.
The electron configuration for neutral Barium is [Xe] 6s2. Barium plus 2 means it has lost 2 electrons, so the electron configuration for Barium plus 2 would be [Xe].
Barium has 2 valence electrons. It needs to give up these 2 electrons to achieve a noble gas electron configuration, specifically by having a filled outer shell like a noble gas.
Barium has 2 electrons in its outer shell. In order to achieve a noble gas electron configuration it needs to lose these 2 electrons. This will leave it with the same electron configuration as Xenon, a noble gas.
The condensed ground state electron configuration for Barium is [Xe] 6s^2. This indicates that Barium has a full inner electron shell (represented by the noble gas configuration of Xenon) and two electrons in the outermost 6s orbital.
The element with an outermost electron configuration of 6s2 is Barium (Ba). It is classified as an alkaline earth metal on the periodic table.
The electron configuration for neutral Barium is [Xe] 6s2. Barium plus 2 means it has lost 2 electrons, so the electron configuration for Barium plus 2 would be [Xe].
Two electrons
When barium becomes an ion, it typically loses two electrons to achieve a stable electron configuration, resulting in a barium ion with a charge of +2. This ion is represented as Ba²⁺. The loss of these two electrons allows barium to attain the same electron configuration as the nearest noble gas, xenon.
Barium has 2 valence electrons. It needs to give up these 2 electrons to achieve a noble gas electron configuration, specifically by having a filled outer shell like a noble gas.
Barium has 2 electrons in its outer shell. In order to achieve a noble gas electron configuration it needs to lose these 2 electrons. This will leave it with the same electron configuration as Xenon, a noble gas.
The condensed ground state electron configuration for Barium is [Xe] 6s^2. This indicates that Barium has a full inner electron shell (represented by the noble gas configuration of Xenon) and two electrons in the outermost 6s orbital.
The element with an outermost electron configuration of 6s2 is Barium (Ba). It is classified as an alkaline earth metal on the periodic table.
Barium, with an atomic number of 56, needs to lose 2 electrons to achieve a stable electron configuration, similar to a noble gas. This is because barium will then have a filled outer electron shell, following the octet rule.
The noble gas electron configuration for barium is [Xe] 6s2.
A barium atom attains a stable electron configuration when it bonds with a halogen atom, such as chlorine, by transferring one of its valence electrons to achieve a full outer shell. This results in the formation of an ionic bond between the two atoms.
Barium loses two electrons in a reaction, so it becomes positive or a cation.
When barium forms its most common ion, it loses two electrons to achieve a full outer shell configuration, resulting in a 2+ ion (Ba^2+). This ion has a stable electron configuration similar to that of a noble gas, which is energetically favorable.