Indicate the number of elements and the number of atoms in the composition of baking soda NaHCO3.

An element is a kind of atom. In the periodic system D.I. Mendeleev, all currently known types of atoms, that is, chemical elements, are indicated.
Thus, baking soda or sodium bicarbonate (NaHCO3) is made up of four chemical elements:
– sodium (Na);
– hydrogen (H):
– carbon (C);
– oxygen (O).
The NaHCO3 molecule consists of one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms.
This means that the baking soda molecule consists of 4 elements and 6 atoms.