Periodic table and elements

What is special about the halogens?

What makes alkali metals so reactive?

Why do halogens combine so readily with alkali metals?

How many of the recently discovered elements follow the periodic law?

Mendeleev could predict new elements because of

What type of element is dull, brittle and conducts heat and electricity poorly?

Which is the most reactive group of metals?

The majority of elements are what classification?

What kind of element has some characteristics of both metals and nonmetals?

Elements on the periodic table are arranged in order of