Here's what makes up a chlorine atom:
* Protons: 17 protons in the nucleus, giving it an atomic number of 17.
* Neutrons: 18 neutrons in the nucleus (most common isotope). The number of neutrons can vary, creating different isotopes of chlorine.
* Electrons: 17 electrons orbiting the nucleus.
Key properties of chlorine:
* Symbol: Cl
* Atomic mass: Approximately 35.45 amu (atomic mass unit)
* State at room temperature: Gas (diatomic, meaning it exists as Cl₂)
* Color: Yellowish-green
* Odor: Pungent, suffocating
Chlorine is a very reactive element and is found in many compounds, including table salt (NaCl).
