group 17 - the halogens
the group number of the periodic table shows the valence electron. such as :- sodium is placed in group 1 and have valence electron.
Group-17 in the periodic table gains electron most readily. The elements in this group require only one electron to complete its octet.
Alkali metals, Ist group.
group #1 on the periodic table is called alkali metals, has one valence electron, and is the most active metal group.
In the periodic table, group indicates the number of valence electrons in the outermost shell. E.g. Group I- the elements in that group have one valence electron in the outermost shell.
The number of shells in periodic table increase down the group, i.e., vertically.
Group VII A or XVII or Halogens.
One valence electron.
Cesium is in the 6th row of the periodic table. Therefore Cesium must have one electron in the 6s orbital.
They all have one valence electron.
it has one valence electron
Both lithium and potassium are in Group I of the Periodic Table, so they both have one valence electron.