17 Cl 35.45

Chlorine

DIATOMIC NONMETAL

Phase: Gas

Discovered: Carl Wilhelm Scheele

Block: P

Summary

Chlorine is a chemical element with symbol Cl and atomic number 17. It also has a relative atomic mass of 35.5. Chlorine is in the halogen group (17) and is the second lightest halogen following fluorine.

Appearance: pale yellow-green gas

Source: Wikipedia

Physical Properties

Atomic Mass 35.45 u

Density 3.2 g/cm³

Melting Point 171.6 K

Boiling Point 239.11 K

Molar Heat N/A

Electron Affinity 348.575 kJ/mol

Ionization Energies

1^st: 1251.2 kJ/mol

2^nd: 2298 kJ/mol

3^rd: 3822 kJ/mol

4^th: 5158.6 kJ/mol

5^th: 6542 kJ/mol

6^th: 9362 kJ/mol

7^th: 11018 kJ/mol

8^th: 33604 kJ/mol

9^th: 38600 kJ/mol

10^th: 43961 kJ/mol

11^th: 51068 kJ/mol

12^th: 57119 kJ/mol

13^th: 63363 kJ/mol

14^th: 72341 kJ/mol

15^th: 78095 kJ/mol

16^th: 352994 kJ/mol

17^th: 380760 kJ/mol