Question

What element has the symbol of $Li$ ?

Answer 1

Periodic table consists of different elements arranged in the increasing order of atomic numbers. These elements are arranged in groups and periods. The first group elements are alkaline earth metals the second element in the first group is lithium has the chemical symbol of Li.

Complete Step By Step Answer:
Chemical elements are the purest form of atoms. Modern periodic table is the representation of chemical elements arranged in the increasing order of atomic numbers. These elements are arranged in the vertical columns and horizontal rows. The vertical columns were known as groups and the horizontal rows were known as periods. There are a total of $118$ elements in $7$ periods and $18$ groups.
The elements in the group $1$ are known as alkali earth metals. These are metals as they can easily lose electrons. The elements in alkali earth metals are hydrogen, lithium, sodium, potassium, rubidium and caesium.
Lithium is a chemical element with atomic number $3$ and belongs to the ${2^{nd}}$ period and ${1^{st}}$ group.
It is an electropositive element in the periodic table. As the electrons will be easily lost from the element. The symbol of lithium is $Li$ . The molar mass of the element is $7$ as there were three protons and four neutrons in the commonly occurring isotope.

Note:
Chemical symbol is a short representation of chemical elements. Some chemical elements have chemical names and common names. Sodium is a common name and the chemical name is Natrium. Thus, the symbol of element sodium is $Na$ .