Question

you might need: periodic table
complete the table.
element name chemical symbol atomic number
cobalt co 27
bromine
show periodic table

Explanation:

Step1: Use periodic table

The periodic - table is used to find the chemical symbol and atomic number of elements.

Step2: Find bromine

Looking up bromine in the periodic table, its chemical symbol is $Br$ and atomic number is 35.

Answer:

Element name	Chemical symbol	Atomic number
bromine	Br	35