Chemistry Work Help!!?

Does "this arrangement" mean the arrangement on the periodic table?
Have you read the chapter?? All this is in every chem. book I have ever read.

1. What is the effect of this arrangement on their atomic radius across the periods ... atomic radius decreases fro L to R.
2. What is the effect of this arrangement on their atomic radius across the groups .... this makes no sense ... groups go down the periodic table, not across... in a group the at. radius increases going from top to bottom down the PT.
3.Explain how metal and non metal qualities of elements are changed across the period 2 and group 2 ... across period 2 elements have strongly metallic properties on the left changing to nonmetallic on the right. ... Down period 2 all elements are metals .. at the bottom some properties of metals (losing electrons in a reaction) are much stronger.

4.Explain how 1st ionisation energy is changed across the period 2
--- ionization energy is low on left (these are metals) and increases toward right .. becoming highest on left.
5. Explain how electronegativity is changed across the period 2
Low electroneg. on left ... higher e-n on the right.