The second period. (Rows)
Lithium is in the first period of the periodic table. It is the first element in the alkali metal group.
Actinides
Lithium is in the second period and the first group in the Periodic Table of Mendeleev.
Oxygen is more electronegative than lithium. Electronegativity refers to an element's ability to attract electrons in a chemical bond, and oxygen has a higher electronegativity value compared to lithium on the periodic table.
The group no. of Lithium is 1 and its period number is 2.
Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon.
Neon (Ne) in the second period on the periodic table of the elements has the highest atomic number in that period of 10.
The lightest element that is in period number 2 is lithium. Lithium is also the solid that is the least dense.
The alkali metal in period 2 is lithium (Li).
The element in the same period as helium that has only one valence electron is lithium. Both helium and lithium are located in Period 1 of the periodic table, with helium in Group 18 (noble gases) and lithium in Group 1 (alkali metals). Lithium has the atomic number 3 and has one electron in its outermost shell, making it highly reactive.
The element Silicon (Si) is in the third Period on the Periodic Table. It is also the second element in Group 14(4) - The Carbon Family. It has 14 electrons in 3 shells, with 4 electrons in the outer shell.
You can discover this by looking at a periodic table of the elements.The rows of the table are called periods; the columns are called groups.The second period therefore begins with the element Lithium and ends with the element Neon.