answersLogoWhite

0

Group 7 of the Periodic Table, known as the halogens, are all extremely reactive since they each contain seven valence electrons and only need one more to complete an outer shell. The periodic law suggests that recurring patterns of the properties of elements arise when they are arranged in order of increasing atomic number. This holds true as the halogens all act very similarly as each other in chemical reactions.

User Avatar

Sigurd Nolan

Lvl 13
3y ago

What else can I help you with?