Question

the electronic configuration of an element is 1s2,2s2,2p6,3s23p5 what is the element
​

Answer 1

Explanation:

That is chlorine.

Cl

Symbol: Chlorine

Atomic Number: 17

Atomic Weight: 35.4527

Element Classification: Halogen

Discovered By: Carl Wilhelm Scheele

Discovery Date: 1774 (Sweden)

Name Origin: Greek: chloros (greenish yellow).

Density (g/cc): 1.56 (@ -33.6°C)

Melting Point (K): 172.2

Boiling Point (K): 238.6

Appearance: Greenish-yellow

disagreeable gas

Atomic Radius (pm): n/a