this is how sodium appears in the periodic table. the arrow is pointing to sodiums number of neutrons…
this is how sodium appears in the periodic table. the arrow is pointing to sodiums number of neutrons. chemical symbol atomic mass combined number of electrons and protons
Answer
Answer:
atomic mass
Explanation:
Step1: Identify element details
In periodic - table, 11 is atomic number, Na is symbol, Sodium is name, 22.99 is atomic mass.
Step2: Match with options
The arrow - pointed 22.99 is atomic mass.