The element helium is highlighted in the periodic table above. The atomic symbol for helium is He. Each helium atom has two protons in its nucleus. So, helium's atomic number is 2.

Question

The periodic table is organized by the atomic number of each element. Notice that the atomic number increases from left to right along each row.
Use the periodic table to complete these sentences.

the chemical element with the atomic number 79 is ? its atomic symbol is ?

Answer 1

The chemical element with the atomic number 79 is gold. Its atomic symbol is Au.