Question

1. match the elements with the groups. krypton rubidium titanium silicon

Explanation:

Krypton is a noble gas in group 18 of the periodic table. Rubidium is an alkali - metal in group 1. Titanium is a transition metal in group 4. Silicon is a metalloid in group 14.

Answer:

Krypton - Group 18
Rubidium - Group 1
Titanium - Group 4
Silicon - Group 14