Answer:
Barium, Strontium and Beryllium
Explanation:
There are 18 groups in the periodic table and the previous 3 all belong to the same group, group 2 the alkali metals
Silicon is group 14, the carbon group
Aluminum is in the boron group, group 13
Osminium is in the group 8 transition metals
The answer is 45 :^))))))))))
4/3 • 5/3 = 20/9 divided by 2 = 10/9
Answer: width 2.5 length 4
Step-by-step explanation: