What is the atomic number of Chlorine?

The atomic number of Chlorine (Cl) is 17.

What is the atomic mass of Chlorine?

The atomic mass of Chlorine is 35.45 atomic mass units (u).

What group and period is Chlorine in?

Chlorine is in period 3, group 17 of the periodic table. It is a halogen element in the p-block.

How many valence electrons does Chlorine have?

Chlorine has 7 valence electron(s).

Chlorine (Cl) — Atomic Number 17 | Soren Periodic Table

Chlorine (Cl) — Atomic Number 17Green-yellow toxic gas, used to disinfect water.Chlorine Properties

Atomic Number: 17

Symbol: Cl

Atomic Mass: 35.45 u

Category: halogen

Group: 17

Period: 3

Block: p-block

Electron Configuration: 1s2 2s2 2p6 3s2 3p5

Valence Electrons: 7

Electronegativity: 3.16

Ionization Energy: 1251.2 kJ/mol

Electron Affinity: 349.0 kJ/mol

Atomic Radius: 79.0 pm

Melting Point: 171.6 K

Boiling Point: 239.11 K

Chlorine in the Periodic TableChlorine is a halogen element located in period 3, group 17 of the periodic table. It has the chemical symbol Cl and atomic number 17. The electron configuration of Chlorine is 1s2 2s2 2p6 3s2 3p5, giving it 7 valence electron(s).Interactive Chlorine LearningExplore Chlorine in interactive 3D with the Soren Periodic Table. View Bohr model, quantum orbital model, nucleus inspector, and phase lab with temperature and pressure controls. Includes fun facts, real-world uses, and NCTB curriculum integration for Bangladeshi students.