Sodium.
If an element has 11 protons, its atomic number is 11.
The atomic number of sodium is 11.
Sodium is a metal element. Atomic number of it is 11.
The symbol of sodium is Na and its atomic number is 11.
The chemical symbol for the element of Sodium is Na and its atomic number is 11.
Sodium is a metal element. Atomic number of it is 11.
Sodium is a metal element. Atomic number of it is 11.
Sodium is a metal element. Atomic number of it is 1.
Sodium symbol: Na Atomic number: 11
The element with the lowest atomic number in period 3 is sodium (Na) with an atomic number of 11.
11.
Sodium (Na) is atomic number 11.