Sodium (Na) is the least reactive. It will still react violently, but not as badly as the other alkali metals (group 1). The most reactive is Francium.
Noble gasses (group 8) are the least reactive elements in the periodic table because they have a full valence shell.
The right-most column, Group 8*, or the noble gases, is the least reactive...
Iridium (Ir) is, so far, the most corrosion resistant of all known metals. Due to this property, it is generally agreed that Iridium is the least reactive. Despite having properties of high...
The Periodic Table is a table of elements although metals are in it. There are 5 types of categories for the elements. From left to right there are the Alkali Metals, Alkali Earth Metals, Transition...
Lithium(Li), Sodium(Na), Potassium(K), Rubidium(Rb), Cesium(Cs) and Francium(Fr) These are the group one metals known as alkali metals and are highly reactive with water.