It nonmetal ! I know this one! I had it on a worksheet!
The most metallic element after francium is cesium. Cesium is located in Group 1 of the periodic table and has properties that are characteristic of metals, such as high electrical conductivity and metallic luster.
group 1, or 2, or ... 18 depends on its properties.
The element that would have properties most similar to the new element would be an element that lies in the same group as the new element. Specifically, the element with the most similar properties will lie directly above or below that element in the group.
The element is most likely located on the left side of the periodic table, in the "s-block" or "d-block," since these regions generally consist of metals with strong metallic properties. Additionally, elements in the "alkali metals" or "transition metals" groups are known to exhibit such characteristics.
Mg (magnesium)
That would be the noble gases
nonmetals
it's called a non metal
Non metals
The most metallic element after francium is cesium. Cesium is located in Group 1 of the periodic table and has properties that are characteristic of metals, such as high electrical conductivity and metallic luster.
the most important properties in an element is state at room tempreture
most metals are metallic in a way. the periodic table consists of 3 different types of elements metals, non metals and metalloids the most metallic are the metals because they posses the most metal like properties.
Density
Calcium is the element that has the most properties in common with magnesium on the periodic table. Both elements are in Group 2, known as the alkaline earth metals, and share similar physical and chemical properties such as high reactivity and the ability to form ionic compounds.
Their properties are similar with non-metals and metals. That's why they're called semi-metals. They are reactive depending on the element they are reacting with, and they are semi-conductors.
Calcium is an element that behaves most like magnesium due to their similar chemical properties. They are both alkaline earth metals, have similar reactivity, and form similar compounds.
A metalloid is a chemical element with properties that are in-between or a mixture of those of metals and nonmetals, and which is considered to be difficult to classify unambiguously as either a metal or a nonmetal.