what is the identity of the atom shown? a argon b bromine c chlorine d nitrogen

what is the identity of the atom shown? a argon b bromine c chlorine d nitrogen
Answer
Explanation:
Step1: Identify atomic number
The number of protons in an atom determines its identity. Here, the number of protons ($p$) is 17 as indicated in the nucleus ($_{17}p$).
Step2: Match with element
Looking at the periodic - table, an element with an atomic number of 17 is chlorine.
Answer:
C. chlorine