What characteristics does group one show in the periodic table?
Group 1 is known as the alkali metals. Their major characteristic is a reaction with water that ranges from vigorous (Li) to violent (Cs) as you move down the group. This reaction results in alkaline solutions.
They are soft, low density, low melting metals that tarnish rapidly in air.
Even though hydrogen has a vacant electron in its outer shell, like many of the elements in group 1 of the periodic table, it has unusual properties, e.g. it is a gas at room temperature, whereas the other elements are all solid. As a result, some forms of the periodic table show hydrogen above the rest in the table, in its own special place. However, it is still in group 1
Elements are located on the periodic table based off of their atomic number, but the vertical columns they are in (groups) show how many valence electrons they have. If an element were in Group 3 of the periodic table, it would have 3 valence electrons, and so on. This doesn't apply to the Transition Metals, so one should skip straight to Group 14, where the elements all have 4 valence electrons. Group 15 has 5…
It might be included in group 1 (one). Hydrogen is a special case, because even though it does have the defining characteristic of all group 1 elements, which is that it has one valence electron, it is physically very different from all the other group 1 elements. Hydrogen (at normal temperatures and pressures) is a gas, and all the other group 1 elements are solid metals. As a result, some forms of the periodic table…
Polonium has the highest atomic number in group 6A, a.k.a. group 16 on the periodic table. Its atomic number is 84. Polonium was discovered by Marie Curie, and she named it after her home country of Poland. All isotopes of polonium are radioactive. Some newer periodic tables will show another element below this one, ununhexium (Uuh, atomic #116) but this is still up for debate.
The elements are arranged in horizontal rows and vertical columns, the rows are called periods and the columns are called groups or families. All the elements of the same group have similar chemical and physical properties. The periods all show a similar pattern, with metallic elements on the left transitioning to nonmetallic elements on the right of the periodic table.