_______are placed in the extreme right of the periodic table.

The vertical columns in the periodic table are called

_________are placed in the upper right hand corner of the modern periodic law.

________is the ability of an element to exist in more than one form.

The elements in the period 7 from thorium to lawrencium are called

________________ are good reducing agents.

_________ arranged elements in increasing order of atomic numbers in horizontal rows and vertical columns.

Chemical properties are dependent on

First group elements are commonly known as

______________ react with water to form strong alkalies.