plutonium, and heluim
Groups. Elements in the same group have similar electronegativity properties.
Fluorine and Bromine are the two elements having the same property as that of Chlorine.
Ekasilicon was the name appointed by Mendeleev to the undiscovered germanium; germanium has similar chemical properties to silicon and tin.
"heat treatable aluminum alloy". There are usually other elements added as well, for various properties.
Chlorine ,Bromine and Iodine have same chemical properties as Fluorine.
Yes; for example group 1 is also called alkali metals.
Elements in Group 14 on the Periodic Table have similar properties to carbon. These elements are carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl). Each of these elements has two electrons in the outermost p orbital, the electron configuration ns2np2, and they tend to adopt oxidation sates of +4 (+2 for the heavier elements due to the inert pair effect). Silicon is most similar to carbon.
Gallium and arsenic because they are ekasilicon's closest neighbors, and would therefore have very similar properties
The elements in the periodic table are arranged so that there is an increase from left to right (such as atomic radius) and from up to down (such as atomic weight). The elements that have somehow similar properties (not always, mind you) are arranged in families (or columns, as you unappropriately name them).Hope this is useful.
Because in the table the elements are arranged into "periods", elements belonging to the same period have similar physical/chemical properties. This in tern reflects the fact that they have a similar number of outer shell electrons.
The elements is a group on the Periodic Table are considered a family because they have similar electron configurations and similar properties.
Cu is only one element- copper. But its latin name is Cuprum.