Why are sodium (Na) and potassium (K) in the same group on the periodic table?(1 point)
Sodium and potassium are in the same group on the periodic table because they both have one valence electron in their outermost energy level, making them both highly reactive elements.
Sodium (Na) and potassium (K) are in the same group on the periodic table because they both belong to Group 1A (or Group 1), which is known as the alkali metals group. The elements in this group have similar chemical properties, including having a single valence electron in their outermost shell. This similarity is due to the fact that the electronic configuration of both sodium and potassium ends with a s^1 electron configuration. As a result, they exhibit similar patterns of reactivity and tend to form similar compounds.
Sodium (Na) and potassium (K) are in the same group, specifically Group 1, on the periodic table because they share similar chemical properties. This group is known as the alkali metals group.
To understand why they are in the same group, it is important to know a little bit about the organization of the periodic table. The periodic table is a tabular arrangement of chemical elements based on their atomic number, electron configuration, and recurring chemical properties. Elements in the same group share similar chemical behaviour due to the similarities in their electron configuration and valence electrons.
Now, to determine why sodium and potassium are placed together, you can refer to the periodic table. First, locate sodium (Na) and potassium (K) on the periodic table. Sodium (Na) is found in the third period (row) of the table, and potassium (K) is located just below it in the same period.
Both sodium and potassium are members of Group 1 because they share certain characteristics. Firstly, they both have a single valence electron in their outermost shell, which makes them highly reactive. This characteristic is common among all the elements in Group 1. Secondly, they are both soft, silvery-white metals and have relatively low melting and boiling points. Finally, they are highly reactive with water, easily forming hydroxides and releasing hydrogen gas in the process.
By looking at the periodic table and considering these shared properties, it becomes evident why sodium and potassium are placed in the same group. The elements in this group have similar chemical behaviors due to their electron configurations and valence electrons.