an alkali metal in period 3 and halogen in period 2

 

Asked by VasuNishad123 | 8th Apr, 2018, 11:31: AM

Expert Answer:

An alkali metal in period 3 is sodium.
 
Halogen in period 2 is Fluorine.

Answered by Varsha | 8th Apr, 2018, 03:09: PM