What are the horizontal (from left to right) parts of the periodic table called?

Which of the following elements would be chemically similar to calcium (Ca)?

Which element would most likely have chemical properties similar to that of fluorine (F)? Ne N Li Br

____________ varies from family to family on the periodic table.

In which set of elements would all members be expected to have very similar chemical properties?

What is true about elements that are in the same column (group/family)

What family of elements is in the right-most column of the periodic table?

The vertical (top to bottom) parts of the periodic table are called "groups" or ___.

________________________ are the least reactive family of elements.