_________________ lie at the bottom of the periodic table in two horizontal rows.
Transition elements
Inner transition elements
Post transition elements
Noble gases
________________ are univalent.
Halogens
Alkaline earth metals
__________arranged elements in increasing order of atomic weights in groups of three called triads.
Newland
Dobereiner
Mendeleev
Moseley
The elementsin the group number 18 are known as
Alkali metals
______________ react with water to form strong alkalies.
Boron
Second group elements are commonly known as
Lanthanides
_________are placed in the upper right hand corner of the modern periodic law.
Metals
Non-metals
Semimetal
Metalloids
Chemical properties are dependent on
Density
Outer electronic configuration
Viscosity
Physical properties
Elements in the same group had the same ___________ and similar chemical properties.
Atomic number
Valency
Atomic structure
The elements from group number 13 to group number 16 are collectively known as
