How many valence electrons does barium have?

How many valence electrons does barium have?

Answer: The correct answer is 2 valence electrons

Number of valence electrons is 2 in case of barium. This could be exemplified by determining its place on the person’s periodic table and determining its electron configuration. Barium is an element belonging to the group of alkaline earth metals in the periodic table, it is in Group 2 and it is formerly designated as IIA. Elements in this group generally have 2 valence electrons. The atomic number of Barium is 56 and the electronic configuration of barium is [Xe] 6s². The “[Xe]” stands for all the electron configuration of the previous noble gas, which is xenon and “6s²” means that there are two electrons in the last 6s orbital. In the case of helium, the two electrons in the second level are the outer sphere electrons or the valance electrons that participate in the chemical reactions or bonding.