Question

What element/elements have symbols of $Cl$ ?

Answer 1

The quantity of protons in the core is the characterizing property of a component, and is alluded to as its nuclear number (represented by a symbol $Z$ ) – all particles with a similar nuclear number are molecules of a similar component.

Complete step by step answer:
While ascribing symbols to components the overall principle was utilizing the main letter of the recently named component and, if that generally existed for a formerly found component, utilizing the second or third letter in lower case, following the primary letter utilized in capitalized.
We have to know, chlorine is a halogen. The group of chlorine is $7A$ . Therefore, the atomic number of chlorine is $17$. Then the atomic mass of chlorine is $35.45 \ amu$ .
For example, for nitrogen,
When, nitrogen is a non-metal. Then, the atomic number of nitrogen is $7$ . Then the atomic mass of nitrogen is $14$ . The group of nitrogen is $5A$ .

Additional information:
- We have to know in science, a component is an unadulterated substance consisting just of molecules that all have similar quantities of protons in their nuclear cores. In contrast to synthetic mixtures, compound components cannot be separated into more straight-forward, substances by synthetic methods.
- We have to know, by November $2016$, the International Union of Pure and Applied Chemistry had perceived a sum of $118$ components. The initial $94$ happens normally on Earth, and the excess $24$ are engineered components delivered in atomic responses.
- Save for shaky radioactive components (radionuclides) which rot rapidly, essentially the entirety of the components are accessible modernly in shifting sums. The disclosure and union of additional new components is a continuous space of logical examination.

Note: The naming of the early components was emphatically connected with the dialects of Latin, Greek, German, and, in later years, with the name of the pioneer which could and presumably raised issues of oversight of names of associates.