The Earth's crust contains 2.27% sodium, making it the seventh most abundant element on Earth and the fifth most abundant metal, behind aluminium, iron, calcium, and magnesium and ahead of potassium.
Kerak bumi mengandung 2,27% natrium, membuatnya unsur paling melimpah ke-7 di Bumi dan logam paling melimpah ke-5, setelah aluminium, besi, kalsium, dan magnesium, dan sebelum kalium.